diff --git a/src/docs/docs.go b/src/docs/docs.go
index e46b0dd..be1620b 100644
--- a/src/docs/docs.go
+++ b/src/docs/docs.go
@@ -1482,6 +1482,112 @@ const docTemplate = `{
                 }
             }
         },
+        "/v1/groups/{number}/{groupid}/pin-message": {
+            "post": {
+                "description": "Pin a message in a Signal Group.",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Groups"
+                ],
+                "summary": "Pin a message in a Signal Group.",
+                "parameters": [
+                    {
+                        "description": "Pin",
+                        "name": "data",
+                        "in": "body",
+                        "required": true,
+                        "schema": {
+                            "$ref": "#/definitions/api.PinMessageInGroupRequest"
+                        }
+                    },
+                    {
+                        "type": "string",
+                        "description": "Registered Phone Number",
+                        "name": "number",
+                        "in": "path",
+                        "required": true
+                    },
+                    {
+                        "type": "string",
+                        "description": "Group Id",
+                        "name": "groupid",
+                        "in": "path",
+                        "required": true
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "OK",
+                        "schema": {
+                            "type": "string"
+                        }
+                    },
+                    "400": {
+                        "description": "Bad Request",
+                        "schema": {
+                            "$ref": "#/definitions/api.Error"
+                        }
+                    }
+                }
+            },
+            "delete": {
+                "description": "Unpin a message in a Signal Group.",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Groups"
+                ],
+                "summary": "Unpin a message in a Signal Group.",
+                "parameters": [
+                    {
+                        "description": "Unpin",
+                        "name": "data",
+                        "in": "body",
+                        "required": true,
+                        "schema": {
+                            "$ref": "#/definitions/api.UnpinMessageInGroupRequest"
+                        }
+                    },
+                    {
+                        "type": "string",
+                        "description": "Registered Phone Number",
+                        "name": "number",
+                        "in": "path",
+                        "required": true
+                    },
+                    {
+                        "type": "string",
+                        "description": "Group Id",
+                        "name": "groupid",
+                        "in": "path",
+                        "required": true
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "OK",
+                        "schema": {
+                            "type": "string"
+                        }
+                    },
+                    "400": {
+                        "description": "Bad Request",
+                        "schema": {
+                            "$ref": "#/definitions/api.Error"
+                        }
+                    }
+                }
+            }
+        },
         "/v1/groups/{number}/{groupid}/quit": {
             "post": {
                 "description": "Quit the specified Signal Group.",
@@ -2600,6 +2706,9 @@ const docTemplate = `{
     "definitions": {
         "api.AddDeviceRequest": {
             "type": "object",
+            "required": [
+                "uri"
+            ],
             "properties": {
                 "uri": {
                     "type": "string"
@@ -2608,6 +2717,10 @@ const docTemplate = `{
         },
         "api.AddStickerPackRequest": {
             "type": "object",
+            "required": [
+                "pack_id",
+                "pack_key"
+            ],
             "properties": {
                 "pack_id": {
                     "type": "string",
@@ -2621,6 +2734,9 @@ const docTemplate = `{
         },
         "api.ChangeGroupAdminsRequest": {
             "type": "object",
+            "required": [
+                "admins"
+            ],
             "properties": {
                 "admins": {
                     "type": "array",
@@ -2632,6 +2748,9 @@ const docTemplate = `{
         },
         "api.ChangeGroupMembersRequest": {
             "type": "object",
+            "required": [
+                "members"
+            ],
             "properties": {
                 "members": {
                     "type": "array",
@@ -2643,6 +2762,10 @@ const docTemplate = `{
         },
         "api.ClosePollRequest": {
             "type": "object",
+            "required": [
+                "poll_timestamp",
+                "recipient"
+            ],
             "properties": {
                 "poll_timestamp": {
                     "type": "string",
@@ -2656,6 +2779,9 @@ const docTemplate = `{
         },
         "api.Configuration": {
             "type": "object",
+            "required": [
+                "logging"
+            ],
             "properties": {
                 "logging": {
                     "$ref": "#/definitions/api.LoggingConfiguration"
@@ -2664,6 +2790,10 @@ const docTemplate = `{
         },
         "api.CreateGroupRequest": {
             "type": "object",
+            "required": [
+                "members",
+                "name"
+            ],
             "properties": {
                 "description": {
                     "type": "string"
@@ -2695,6 +2825,9 @@ const docTemplate = `{
         },
         "api.CreateGroupResponse": {
             "type": "object",
+            "required": [
+                "id"
+            ],
             "properties": {
                 "id": {
                     "type": "string"
@@ -2703,6 +2836,11 @@ const docTemplate = `{
         },
         "api.CreatePollRequest": {
             "type": "object",
+            "required": [
+                "answers",
+                "question",
+                "recipient"
+            ],
             "properties": {
                 "allow_multiple_selections": {
                     "type": "boolean",
@@ -2731,6 +2869,9 @@ const docTemplate = `{
         },
         "api.CreatePollResponse": {
             "type": "object",
+            "required": [
+                "timestamp"
+            ],
             "properties": {
                 "timestamp": {
                     "type": "string",
@@ -2749,6 +2890,9 @@ const docTemplate = `{
         },
         "api.DeviceLinkUriResponse": {
             "type": "object",
+            "required": [
+                "device_link_uri"
+            ],
             "properties": {
                 "device_link_uri": {
                     "type": "string"
@@ -2757,6 +2901,9 @@ const docTemplate = `{
         },
         "api.Error": {
             "type": "object",
+            "required": [
+                "error"
+            ],
             "properties": {
                 "error": {
                     "type": "string"
@@ -2765,14 +2912,39 @@ const docTemplate = `{
         },
         "api.LoggingConfiguration": {
             "type": "object",
+            "required": [
+                "Level"
+            ],
             "properties": {
                 "Level": {
                     "type": "string"
                 }
             }
         },
+        "api.PinMessageInGroupRequest": {
+            "type": "object",
+            "required": [
+                "target_author",
+                "timestamp"
+            ],
+            "properties": {
+                "duration": {
+                    "type": "integer"
+                },
+                "target_author": {
+                    "type": "string"
+                },
+                "timestamp": {
+                    "type": "integer"
+                }
+            }
+        },
         "api.RateLimitChallengeRequest": {
             "type": "object",
+            "required": [
+                "captcha",
+                "challenge_token"
+            ],
             "properties": {
                 "captcha": {
                     "type": "string",
@@ -2786,6 +2958,12 @@ const docTemplate = `{
         },
         "api.Reaction": {
             "type": "object",
+            "required": [
+                "reaction",
+                "recipient",
+                "target_author",
+                "timestamp"
+            ],
             "properties": {
                 "reaction": {
                     "type": "string"
@@ -2803,6 +2981,11 @@ const docTemplate = `{
         },
         "api.Receipt": {
             "type": "object",
+            "required": [
+                "receipt_type",
+                "recipient",
+                "timestamp"
+            ],
             "properties": {
                 "receipt_type": {
                     "type": "string",
@@ -2832,6 +3015,10 @@ const docTemplate = `{
         },
         "api.RemoteDeleteRequest": {
             "type": "object",
+            "required": [
+                "recipient",
+                "timestamp"
+            ],
             "properties": {
                 "recipient": {
                     "type": "string"
@@ -2843,6 +3030,9 @@ const docTemplate = `{
         },
         "api.RemoteDeleteResponse": {
             "type": "object",
+            "required": [
+                "timestamp"
+            ],
             "properties": {
                 "timestamp": {
                     "type": "string"
@@ -2851,6 +3041,10 @@ const docTemplate = `{
         },
         "api.SearchResponse": {
             "type": "object",
+            "required": [
+                "number",
+                "registered"
+            ],
             "properties": {
                 "number": {
                     "type": "string"
@@ -2862,6 +3056,10 @@ const docTemplate = `{
         },
         "api.SendMessageError": {
             "type": "object",
+            "required": [
+                "account",
+                "error"
+            ],
             "properties": {
                 "account": {
                     "type": "string"
@@ -2879,6 +3077,9 @@ const docTemplate = `{
         },
         "api.SendMessageResponse": {
             "type": "object",
+            "required": [
+                "timestamp"
+            ],
             "properties": {
                 "timestamp": {
                     "type": "string"
@@ -2887,6 +3088,11 @@ const docTemplate = `{
         },
         "api.SendMessageV1": {
             "type": "object",
+            "required": [
+                "message",
+                "number",
+                "recipients"
+            ],
             "properties": {
                 "base64_attachment": {
                     "type": "string",
@@ -2911,6 +3117,11 @@ const docTemplate = `{
         },
         "api.SendMessageV2": {
             "type": "object",
+            "required": [
+                "message",
+                "number",
+                "recipients"
+            ],
             "properties": {
                 "base64_attachments": {
                     "type": "array",
@@ -2982,6 +3193,9 @@ const docTemplate = `{
         },
         "api.SetPinRequest": {
             "type": "object",
+            "required": [
+                "pin"
+            ],
             "properties": {
                 "pin": {
                     "type": "string"
@@ -2990,6 +3204,9 @@ const docTemplate = `{
         },
         "api.SetUsernameRequest": {
             "type": "object",
+            "required": [
+                "username"
+            ],
             "properties": {
                 "username": {
                     "type": "string",
@@ -3011,6 +3228,9 @@ const docTemplate = `{
         },
         "api.TrustModeRequest": {
             "type": "object",
+            "required": [
+                "trust_mode"
+            ],
             "properties": {
                 "trust_mode": {
                     "type": "string"
@@ -3019,6 +3239,9 @@ const docTemplate = `{
         },
         "api.TrustModeResponse": {
             "type": "object",
+            "required": [
+                "trust_mode"
+            ],
             "properties": {
                 "trust_mode": {
                     "type": "string"
@@ -3027,12 +3250,30 @@ const docTemplate = `{
         },
         "api.TypingIndicatorRequest": {
             "type": "object",
+            "required": [
+                "recipient"
+            ],
             "properties": {
                 "recipient": {
                     "type": "string"
                 }
             }
         },
+        "api.UnpinMessageInGroupRequest": {
+            "type": "object",
+            "required": [
+                "target_author",
+                "timestamp"
+            ],
+            "properties": {
+                "target_author": {
+                    "type": "string"
+                },
+                "timestamp": {
+                    "type": "integer"
+                }
+            }
+        },
         "api.UnregisterNumberRequest": {
             "type": "object",
             "properties": {
@@ -3059,6 +3300,9 @@ const docTemplate = `{
         },
         "api.UpdateContactRequest": {
             "type": "object",
+            "required": [
+                "recipient"
+            ],
             "properties": {
                 "expiration_in_seconds": {
                     "type": "integer"
@@ -3101,6 +3345,9 @@ const docTemplate = `{
         },
         "api.UpdateProfileRequest": {
             "type": "object",
+            "required": [
+                "name"
+            ],
             "properties": {
                 "about": {
                     "type": "string"
@@ -3123,6 +3370,12 @@ const docTemplate = `{
         },
         "api.VoteRequest": {
             "type": "object",
+            "required": [
+                "poll_author",
+                "poll_timestamp",
+                "recipient",
+                "selected_answers"
+            ],
             "properties": {
                 "poll_author": {
                     "type": "string",
@@ -3149,6 +3402,13 @@ const docTemplate = `{
         },
         "client.About": {
             "type": "object",
+            "required": [
+                "build",
+                "capabilities",
+                "mode",
+                "version",
+                "versions"
+            ],
             "properties": {
                 "build": {
                     "type": "integer"
@@ -3178,6 +3438,13 @@ const docTemplate = `{
         },
         "client.ContactProfile": {
             "type": "object",
+            "required": [
+                "about",
+                "given_name",
+                "has_avatar",
+                "last_updated_timestamp",
+                "lastname"
+            ],
             "properties": {
                 "about": {
                     "type": "string"
@@ -3198,6 +3465,19 @@ const docTemplate = `{
         },
         "client.GroupEntry": {
             "type": "object",
+            "required": [
+                "admins",
+                "blocked",
+                "description",
+                "id",
+                "internal_id",
+                "invite_link",
+                "members",
+                "name",
+                "pending_invites",
+                "pending_requests",
+                "permissions"
+            ],
             "properties": {
                 "admins": {
                     "type": "array",
@@ -3248,6 +3528,14 @@ const docTemplate = `{
         },
         "client.IdentityEntry": {
             "type": "object",
+            "required": [
+                "added",
+                "fingerprint",
+                "number",
+                "safety_number",
+                "status",
+                "uuid"
+            ],
             "properties": {
                 "added": {
                     "type": "string"
@@ -3271,6 +3559,20 @@ const docTemplate = `{
         },
         "client.ListContactsResponse": {
             "type": "object",
+            "required": [
+                "blocked",
+                "color",
+                "given_name",
+                "message_expiration",
+                "name",
+                "nickname",
+                "note",
+                "number",
+                "profile",
+                "profile_name",
+                "username",
+                "uuid"
+            ],
             "properties": {
                 "blocked": {
                     "type": "boolean"
@@ -3312,6 +3614,12 @@ const docTemplate = `{
         },
         "client.ListDevicesResponse": {
             "type": "object",
+            "required": [
+                "creation_timestamp",
+                "id",
+                "last_seen_timestamp",
+                "name"
+            ],
             "properties": {
                 "creation_timestamp": {
                     "type": "integer"
@@ -3329,6 +3637,13 @@ const docTemplate = `{
         },
         "client.ListInstalledStickerPacksResponse": {
             "type": "object",
+            "required": [
+                "author",
+                "installed",
+                "pack_id",
+                "title",
+                "url"
+            ],
             "properties": {
                 "author": {
                     "type": "string"
@@ -3349,6 +3664,11 @@ const docTemplate = `{
         },
         "client.Nickname": {
             "type": "object",
+            "required": [
+                "family_name",
+                "given_name",
+                "name"
+            ],
             "properties": {
                 "family_name": {
                     "type": "string"
@@ -3363,6 +3683,10 @@ const docTemplate = `{
         },
         "client.SetUsernameResponse": {
             "type": "object",
+            "required": [
+                "username",
+                "username_link"
+            ],
             "properties": {
                 "username": {
                     "type": "string"
@@ -3374,6 +3698,11 @@ const docTemplate = `{
         },
         "data.GroupPermissions": {
             "type": "object",
+            "required": [
+                "add_members",
+                "edit_group",
+                "send_messages"
+            ],
             "properties": {
                 "add_members": {
                     "type": "string",
@@ -3400,6 +3729,12 @@ const docTemplate = `{
         },
         "data.LinkPreviewType": {
             "type": "object",
+            "required": [
+                "base64_thumbnail",
+                "description",
+                "title",
+                "url"
+            ],
             "properties": {
                 "base64_thumbnail": {
                     "type": "string"
@@ -3417,6 +3752,11 @@ const docTemplate = `{
         },
         "data.MessageMention": {
             "type": "object",
+            "required": [
+                "author",
+                "length",
+                "start"
+            ],
             "properties": {
                 "author": {
                     "type": "string"
diff --git a/src/docs/swagger.json b/src/docs/swagger.json
index 8ab740d..bff665f 100644
--- a/src/docs/swagger.json
+++ b/src/docs/swagger.json
@@ -1479,6 +1479,112 @@
                 }
             }
         },
+        "/v1/groups/{number}/{groupid}/pin-message": {
+            "post": {
+                "description": "Pin a message in a Signal Group.",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Groups"
+                ],
+                "summary": "Pin a message in a Signal Group.",
+                "parameters": [
+                    {
+                        "description": "Pin",
+                        "name": "data",
+                        "in": "body",
+                        "required": true,
+                        "schema": {
+                            "$ref": "#/definitions/api.PinMessageInGroupRequest"
+                        }
+                    },
+                    {
+                        "type": "string",
+                        "description": "Registered Phone Number",
+                        "name": "number",
+                        "in": "path",
+                        "required": true
+                    },
+                    {
+                        "type": "string",
+                        "description": "Group Id",
+                        "name": "groupid",
+                        "in": "path",
+                        "required": true
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "OK",
+                        "schema": {
+                            "type": "string"
+                        }
+                    },
+                    "400": {
+                        "description": "Bad Request",
+                        "schema": {
+                            "$ref": "#/definitions/api.Error"
+                        }
+                    }
+                }
+            },
+            "delete": {
+                "description": "Unpin a message in a Signal Group.",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Groups"
+                ],
+                "summary": "Unpin a message in a Signal Group.",
+                "parameters": [
+                    {
+                        "description": "Unpin",
+                        "name": "data",
+                        "in": "body",
+                        "required": true,
+                        "schema": {
+                            "$ref": "#/definitions/api.UnpinMessageInGroupRequest"
+                        }
+                    },
+                    {
+                        "type": "string",
+                        "description": "Registered Phone Number",
+                        "name": "number",
+                        "in": "path",
+                        "required": true
+                    },
+                    {
+                        "type": "string",
+                        "description": "Group Id",
+                        "name": "groupid",
+                        "in": "path",
+                        "required": true
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "OK",
+                        "schema": {
+                            "type": "string"
+                        }
+                    },
+                    "400": {
+                        "description": "Bad Request",
+                        "schema": {
+                            "$ref": "#/definitions/api.Error"
+                        }
+                    }
+                }
+            }
+        },
         "/v1/groups/{number}/{groupid}/quit": {
             "post": {
                 "description": "Quit the specified Signal Group.",
@@ -2597,6 +2703,9 @@
     "definitions": {
         "api.AddDeviceRequest": {
             "type": "object",
+            "required": [
+                "uri"
+            ],
             "properties": {
                 "uri": {
                     "type": "string"
@@ -2605,6 +2714,10 @@
         },
         "api.AddStickerPackRequest": {
             "type": "object",
+            "required": [
+                "pack_id",
+                "pack_key"
+            ],
             "properties": {
                 "pack_id": {
                     "type": "string",
@@ -2618,6 +2731,9 @@
         },
         "api.ChangeGroupAdminsRequest": {
             "type": "object",
+            "required": [
+                "admins"
+            ],
             "properties": {
                 "admins": {
                     "type": "array",
@@ -2629,6 +2745,9 @@
         },
         "api.ChangeGroupMembersRequest": {
             "type": "object",
+            "required": [
+                "members"
+            ],
             "properties": {
                 "members": {
                     "type": "array",
@@ -2640,6 +2759,10 @@
         },
         "api.ClosePollRequest": {
             "type": "object",
+            "required": [
+                "poll_timestamp",
+                "recipient"
+            ],
             "properties": {
                 "poll_timestamp": {
                     "type": "string",
@@ -2653,6 +2776,9 @@
         },
         "api.Configuration": {
             "type": "object",
+            "required": [
+                "logging"
+            ],
             "properties": {
                 "logging": {
                     "$ref": "#/definitions/api.LoggingConfiguration"
@@ -2661,6 +2787,10 @@
         },
         "api.CreateGroupRequest": {
             "type": "object",
+            "required": [
+                "members",
+                "name"
+            ],
             "properties": {
                 "description": {
                     "type": "string"
@@ -2692,6 +2822,9 @@
         },
         "api.CreateGroupResponse": {
             "type": "object",
+            "required": [
+                "id"
+            ],
             "properties": {
                 "id": {
                     "type": "string"
@@ -2700,6 +2833,11 @@
         },
         "api.CreatePollRequest": {
             "type": "object",
+            "required": [
+                "answers",
+                "question",
+                "recipient"
+            ],
             "properties": {
                 "allow_multiple_selections": {
                     "type": "boolean",
@@ -2728,6 +2866,9 @@
         },
         "api.CreatePollResponse": {
             "type": "object",
+            "required": [
+                "timestamp"
+            ],
             "properties": {
                 "timestamp": {
                     "type": "string",
@@ -2746,6 +2887,9 @@
         },
         "api.DeviceLinkUriResponse": {
             "type": "object",
+            "required": [
+                "device_link_uri"
+            ],
             "properties": {
                 "device_link_uri": {
                     "type": "string"
@@ -2754,6 +2898,9 @@
         },
         "api.Error": {
             "type": "object",
+            "required": [
+                "error"
+            ],
             "properties": {
                 "error": {
                     "type": "string"
@@ -2762,14 +2909,39 @@
         },
         "api.LoggingConfiguration": {
             "type": "object",
+            "required": [
+                "Level"
+            ],
             "properties": {
                 "Level": {
                     "type": "string"
                 }
             }
         },
+        "api.PinMessageInGroupRequest": {
+            "type": "object",
+            "required": [
+                "target_author",
+                "timestamp"
+            ],
+            "properties": {
+                "duration": {
+                    "type": "integer"
+                },
+                "target_author": {
+                    "type": "string"
+                },
+                "timestamp": {
+                    "type": "integer"
+                }
+            }
+        },
         "api.RateLimitChallengeRequest": {
             "type": "object",
+            "required": [
+                "captcha",
+                "challenge_token"
+            ],
             "properties": {
                 "captcha": {
                     "type": "string",
@@ -2783,6 +2955,12 @@
         },
         "api.Reaction": {
             "type": "object",
+            "required": [
+                "reaction",
+                "recipient",
+                "target_author",
+                "timestamp"
+            ],
             "properties": {
                 "reaction": {
                     "type": "string"
@@ -2800,6 +2978,11 @@
         },
         "api.Receipt": {
             "type": "object",
+            "required": [
+                "receipt_type",
+                "recipient",
+                "timestamp"
+            ],
             "properties": {
                 "receipt_type": {
                     "type": "string",
@@ -2829,6 +3012,10 @@
         },
         "api.RemoteDeleteRequest": {
             "type": "object",
+            "required": [
+                "recipient",
+                "timestamp"
+            ],
             "properties": {
                 "recipient": {
                     "type": "string"
@@ -2840,6 +3027,9 @@
         },
         "api.RemoteDeleteResponse": {
             "type": "object",
+            "required": [
+                "timestamp"
+            ],
             "properties": {
                 "timestamp": {
                     "type": "string"
@@ -2848,6 +3038,10 @@
         },
         "api.SearchResponse": {
             "type": "object",
+            "required": [
+                "number",
+                "registered"
+            ],
             "properties": {
                 "number": {
                     "type": "string"
@@ -2859,6 +3053,10 @@
         },
         "api.SendMessageError": {
             "type": "object",
+            "required": [
+                "account",
+                "error"
+            ],
             "properties": {
                 "account": {
                     "type": "string"
@@ -2876,6 +3074,9 @@
         },
         "api.SendMessageResponse": {
             "type": "object",
+            "required": [
+                "timestamp"
+            ],
             "properties": {
                 "timestamp": {
                     "type": "string"
@@ -2884,6 +3085,11 @@
         },
         "api.SendMessageV1": {
             "type": "object",
+            "required": [
+                "message",
+                "number",
+                "recipients"
+            ],
             "properties": {
                 "base64_attachment": {
                     "type": "string",
@@ -2908,6 +3114,11 @@
         },
         "api.SendMessageV2": {
             "type": "object",
+            "required": [
+                "message",
+                "number",
+                "recipients"
+            ],
             "properties": {
                 "base64_attachments": {
                     "type": "array",
@@ -2979,6 +3190,9 @@
         },
         "api.SetPinRequest": {
             "type": "object",
+            "required": [
+                "pin"
+            ],
             "properties": {
                 "pin": {
                     "type": "string"
@@ -2987,6 +3201,9 @@
         },
         "api.SetUsernameRequest": {
             "type": "object",
+            "required": [
+                "username"
+            ],
             "properties": {
                 "username": {
                     "type": "string",
@@ -3008,6 +3225,9 @@
         },
         "api.TrustModeRequest": {
             "type": "object",
+            "required": [
+                "trust_mode"
+            ],
             "properties": {
                 "trust_mode": {
                     "type": "string"
@@ -3016,6 +3236,9 @@
         },
         "api.TrustModeResponse": {
             "type": "object",
+            "required": [
+                "trust_mode"
+            ],
             "properties": {
                 "trust_mode": {
                     "type": "string"
@@ -3024,12 +3247,30 @@
         },
         "api.TypingIndicatorRequest": {
             "type": "object",
+            "required": [
+                "recipient"
+            ],
             "properties": {
                 "recipient": {
                     "type": "string"
                 }
             }
         },
+        "api.UnpinMessageInGroupRequest": {
+            "type": "object",
+            "required": [
+                "target_author",
+                "timestamp"
+            ],
+            "properties": {
+                "target_author": {
+                    "type": "string"
+                },
+                "timestamp": {
+                    "type": "integer"
+                }
+            }
+        },
         "api.UnregisterNumberRequest": {
             "type": "object",
             "properties": {
@@ -3056,6 +3297,9 @@
         },
         "api.UpdateContactRequest": {
             "type": "object",
+            "required": [
+                "recipient"
+            ],
             "properties": {
                 "expiration_in_seconds": {
                     "type": "integer"
@@ -3098,6 +3342,9 @@
         },
         "api.UpdateProfileRequest": {
             "type": "object",
+            "required": [
+                "name"
+            ],
             "properties": {
                 "about": {
                     "type": "string"
@@ -3120,6 +3367,12 @@
         },
         "api.VoteRequest": {
             "type": "object",
+            "required": [
+                "poll_author",
+                "poll_timestamp",
+                "recipient",
+                "selected_answers"
+            ],
             "properties": {
                 "poll_author": {
                     "type": "string",
@@ -3146,6 +3399,13 @@
         },
         "client.About": {
             "type": "object",
+            "required": [
+                "build",
+                "capabilities",
+                "mode",
+                "version",
+                "versions"
+            ],
             "properties": {
                 "build": {
                     "type": "integer"
@@ -3175,6 +3435,13 @@
         },
         "client.ContactProfile": {
             "type": "object",
+            "required": [
+                "about",
+                "given_name",
+                "has_avatar",
+                "last_updated_timestamp",
+                "lastname"
+            ],
             "properties": {
                 "about": {
                     "type": "string"
@@ -3195,6 +3462,19 @@
         },
         "client.GroupEntry": {
             "type": "object",
+            "required": [
+                "admins",
+                "blocked",
+                "description",
+                "id",
+                "internal_id",
+                "invite_link",
+                "members",
+                "name",
+                "pending_invites",
+                "pending_requests",
+                "permissions"
+            ],
             "properties": {
                 "admins": {
                     "type": "array",
@@ -3245,6 +3525,14 @@
         },
         "client.IdentityEntry": {
             "type": "object",
+            "required": [
+                "added",
+                "fingerprint",
+                "number",
+                "safety_number",
+                "status",
+                "uuid"
+            ],
             "properties": {
                 "added": {
                     "type": "string"
@@ -3268,6 +3556,20 @@
         },
         "client.ListContactsResponse": {
             "type": "object",
+            "required": [
+                "blocked",
+                "color",
+                "given_name",
+                "message_expiration",
+                "name",
+                "nickname",
+                "note",
+                "number",
+                "profile",
+                "profile_name",
+                "username",
+                "uuid"
+            ],
             "properties": {
                 "blocked": {
                     "type": "boolean"
@@ -3309,6 +3611,12 @@
         },
         "client.ListDevicesResponse": {
             "type": "object",
+            "required": [
+                "creation_timestamp",
+                "id",
+                "last_seen_timestamp",
+                "name"
+            ],
             "properties": {
                 "creation_timestamp": {
                     "type": "integer"
@@ -3326,6 +3634,13 @@
         },
         "client.ListInstalledStickerPacksResponse": {
             "type": "object",
+            "required": [
+                "author",
+                "installed",
+                "pack_id",
+                "title",
+                "url"
+            ],
             "properties": {
                 "author": {
                     "type": "string"
@@ -3346,6 +3661,11 @@
         },
         "client.Nickname": {
             "type": "object",
+            "required": [
+                "family_name",
+                "given_name",
+                "name"
+            ],
             "properties": {
                 "family_name": {
                     "type": "string"
@@ -3360,6 +3680,10 @@
         },
         "client.SetUsernameResponse": {
             "type": "object",
+            "required": [
+                "username",
+                "username_link"
+            ],
             "properties": {
                 "username": {
                     "type": "string"
@@ -3371,6 +3695,11 @@
         },
         "data.GroupPermissions": {
             "type": "object",
+            "required": [
+                "add_members",
+                "edit_group",
+                "send_messages"
+            ],
             "properties": {
                 "add_members": {
                     "type": "string",
@@ -3397,6 +3726,12 @@
         },
         "data.LinkPreviewType": {
             "type": "object",
+            "required": [
+                "base64_thumbnail",
+                "description",
+                "title",
+                "url"
+            ],
             "properties": {
                 "base64_thumbnail": {
                     "type": "string"
@@ -3414,6 +3749,11 @@
         },
         "data.MessageMention": {
             "type": "object",
+            "required": [
+                "author",
+                "length",
+                "start"
+            ],
             "properties": {
                 "author": {
                     "type": "string"
diff --git a/src/docs/swagger.yaml b/src/docs/swagger.yaml
index b189493..804385a 100644
--- a/src/docs/swagger.yaml
+++ b/src/docs/swagger.yaml
@@ -4,6 +4,8 @@ definitions:
     properties:
       uri:
         type: string
+    required:
+    - uri
     type: object
   api.AddStickerPackRequest:
     properties:
@@ -13,6 +15,9 @@ definitions:
       pack_key:
         example: 19546e18eba0ff69dea78eb591465289d39e16f35e58389ae779d4f9455aff3a
         type: string
+    required:
+    - pack_id
+    - pack_key
     type: object
   api.ChangeGroupAdminsRequest:
     properties:
@@ -20,6 +25,8 @@ definitions:
         items:
           type: string
         type: array
+    required:
+    - admins
     type: object
   api.ChangeGroupMembersRequest:
     properties:
@@ -27,6 +34,8 @@ definitions:
         items:
           type: string
         type: array
+    required:
+    - members
     type: object
   api.ClosePollRequest:
     properties:
@@ -36,11 +45,16 @@ definitions:
       recipient:
         example: <phone number> OR <username> OR <group id>
         type: string
+    required:
+    - poll_timestamp
+    - recipient
     type: object
   api.Configuration:
     properties:
       logging:
         $ref: '#/definitions/api.LoggingConfiguration'
+    required:
+    - logging
     type: object
   api.CreateGroupRequest:
     properties:
@@ -62,11 +76,16 @@ definitions:
         type: string
       permissions:
         $ref: '#/definitions/data.GroupPermissions'
+    required:
+    - members
+    - name
     type: object
   api.CreateGroupResponse:
     properties:
       id:
         type: string
+    required:
+    - id
     type: object
   api.CreatePollRequest:
     properties:
@@ -87,12 +106,18 @@ definitions:
       recipient:
         example: <phone number> OR <username> OR <group id>
         type: string
+    required:
+    - answers
+    - question
+    - recipient
     type: object
   api.CreatePollResponse:
     properties:
       timestamp:
         example: "1769271479"
         type: string
+    required:
+    - timestamp
     type: object
   api.DeleteLocalAccountDataRequest:
     properties:
@@ -104,16 +129,34 @@ definitions:
     properties:
       device_link_uri:
         type: string
+    required:
+    - device_link_uri
     type: object
   api.Error:
     properties:
       error:
         type: string
+    required:
+    - error
     type: object
   api.LoggingConfiguration:
     properties:
       Level:
         type: string
+    required:
+    - Level
+    type: object
+  api.PinMessageInGroupRequest:
+    properties:
+      duration:
+        type: integer
+      target_author:
+        type: string
+      timestamp:
+        type: integer
+    required:
+    - target_author
+    - timestamp
     type: object
   api.RateLimitChallengeRequest:
     properties:
@@ -123,6 +166,9 @@ definitions:
       challenge_token:
         example: <challenge token>
         type: string
+    required:
+    - captcha
+    - challenge_token
     type: object
   api.Reaction:
     properties:
@@ -134,6 +180,11 @@ definitions:
         type: string
       timestamp:
         type: integer
+    required:
+    - reaction
+    - recipient
+    - target_author
+    - timestamp
     type: object
   api.Receipt:
     properties:
@@ -146,6 +197,10 @@ definitions:
         type: string
       timestamp:
         type: integer
+    required:
+    - receipt_type
+    - recipient
+    - timestamp
     type: object
   api.RegisterNumberRequest:
     properties:
@@ -160,11 +215,16 @@ definitions:
         type: string
       timestamp:
         type: integer
+    required:
+    - recipient
+    - timestamp
     type: object
   api.RemoteDeleteResponse:
     properties:
       timestamp:
         type: string
+    required:
+    - timestamp
     type: object
   api.SearchResponse:
     properties:
@@ -172,6 +232,9 @@ definitions:
         type: string
       registered:
         type: boolean
+    required:
+    - number
+    - registered
     type: object
   api.SendMessageError:
     properties:
@@ -183,11 +246,16 @@ definitions:
         type: array
       error:
         type: string
+    required:
+    - account
+    - error
     type: object
   api.SendMessageResponse:
     properties:
       timestamp:
         type: string
+    required:
+    - timestamp
     type: object
   api.SendMessageV1:
     properties:
@@ -206,6 +274,10 @@ definitions:
         items:
           type: string
         type: array
+    required:
+    - message
+    - number
+    - recipients
     type: object
   api.SendMessageV2:
     properties:
@@ -254,17 +326,25 @@ definitions:
         type: string
       view_once:
         type: boolean
+    required:
+    - message
+    - number
+    - recipients
     type: object
   api.SetPinRequest:
     properties:
       pin:
         type: string
+    required:
+    - pin
     type: object
   api.SetUsernameRequest:
     properties:
       username:
         example: test
         type: string
+    required:
+    - username
     type: object
   api.TrustIdentityRequest:
     properties:
@@ -278,16 +358,32 @@ definitions:
     properties:
       trust_mode:
         type: string
+    required:
+    - trust_mode
     type: object
   api.TrustModeResponse:
     properties:
       trust_mode:
         type: string
+    required:
+    - trust_mode
     type: object
   api.TypingIndicatorRequest:
     properties:
       recipient:
         type: string
+    required:
+    - recipient
+    type: object
+  api.UnpinMessageInGroupRequest:
+    properties:
+      target_author:
+        type: string
+      timestamp:
+        type: integer
+    required:
+    - target_author
+    - timestamp
     type: object
   api.UnregisterNumberRequest:
     properties:
@@ -313,6 +409,8 @@ definitions:
         type: string
       recipient:
         type: string
+    required:
+    - recipient
     type: object
   api.UpdateGroupRequest:
     properties:
@@ -341,6 +439,8 @@ definitions:
         type: string
       name:
         type: string
+    required:
+    - name
     type: object
   api.VerifyNumberSettings:
     properties:
@@ -364,6 +464,11 @@ definitions:
         items:
           type: integer
         type: array
+    required:
+    - poll_author
+    - poll_timestamp
+    - recipient
+    - selected_answers
     type: object
   client.About:
     properties:
@@ -383,6 +488,12 @@ definitions:
         items:
           type: string
         type: array
+    required:
+    - build
+    - capabilities
+    - mode
+    - version
+    - versions
     type: object
   client.ContactProfile:
     properties:
@@ -396,6 +507,12 @@ definitions:
         type: integer
       lastname:
         type: string
+    required:
+    - about
+    - given_name
+    - has_avatar
+    - last_updated_timestamp
+    - lastname
     type: object
   client.GroupEntry:
     properties:
@@ -429,6 +546,18 @@ definitions:
         type: array
       permissions:
         $ref: '#/definitions/data.GroupPermissions'
+    required:
+    - admins
+    - blocked
+    - description
+    - id
+    - internal_id
+    - invite_link
+    - members
+    - name
+    - pending_invites
+    - pending_requests
+    - permissions
     type: object
   client.IdentityEntry:
     properties:
@@ -444,6 +573,13 @@ definitions:
         type: string
       uuid:
         type: string
+    required:
+    - added
+    - fingerprint
+    - number
+    - safety_number
+    - status
+    - uuid
     type: object
   client.ListContactsResponse:
     properties:
@@ -471,6 +607,19 @@ definitions:
         type: string
       uuid:
         type: string
+    required:
+    - blocked
+    - color
+    - given_name
+    - message_expiration
+    - name
+    - nickname
+    - note
+    - number
+    - profile
+    - profile_name
+    - username
+    - uuid
     type: object
   client.ListDevicesResponse:
     properties:
@@ -482,6 +631,11 @@ definitions:
         type: integer
       name:
         type: string
+    required:
+    - creation_timestamp
+    - id
+    - last_seen_timestamp
+    - name
     type: object
   client.ListInstalledStickerPacksResponse:
     properties:
@@ -495,6 +649,12 @@ definitions:
         type: string
       url:
         type: string
+    required:
+    - author
+    - installed
+    - pack_id
+    - title
+    - url
     type: object
   client.Nickname:
     properties:
@@ -504,6 +664,10 @@ definitions:
         type: string
       name:
         type: string
+    required:
+    - family_name
+    - given_name
+    - name
     type: object
   client.SetUsernameResponse:
     properties:
@@ -511,6 +675,9 @@ definitions:
         type: string
       username_link:
         type: string
+    required:
+    - username
+    - username_link
     type: object
   data.GroupPermissions:
     properties:
@@ -529,6 +696,10 @@ definitions:
         - only-admins
         - every-member
         type: string
+    required:
+    - add_members
+    - edit_group
+    - send_messages
     type: object
   data.LinkPreviewType:
     properties:
@@ -540,6 +711,11 @@ definitions:
         type: string
       url:
         type: string
+    required:
+    - base64_thumbnail
+    - description
+    - title
+    - url
     type: object
   data.MessageMention:
     properties:
@@ -549,6 +725,10 @@ definitions:
         type: integer
       start:
         type: integer
+    required:
+    - author
+    - length
+    - start
     type: object
 host: localhost:8080
 info:
@@ -1543,6 +1723,77 @@ paths:
       summary: Add one or more members to an existing Signal Group.
       tags:
       - Groups
+  /v1/groups/{number}/{groupid}/pin-message:
+    delete:
+      consumes:
+      - application/json
+      description: Unpin a message in a Signal Group.
+      parameters:
+      - description: Unpin
+        in: body
+        name: data
+        required: true
+        schema:
+          $ref: '#/definitions/api.UnpinMessageInGroupRequest'
+      - description: Registered Phone Number
+        in: path
+        name: number
+        required: true
+        type: string
+      - description: Group Id
+        in: path
+        name: groupid
+        required: true
+        type: string
+      produces:
+      - application/json
+      responses:
+        "200":
+          description: OK
+          schema:
+            type: string
+        "400":
+          description: Bad Request
+          schema:
+            $ref: '#/definitions/api.Error'
+      summary: Unpin a message in a Signal Group.
+      tags:
+      - Groups
+    post:
+      consumes:
+      - application/json
+      description: Pin a message in a Signal Group.
+      parameters:
+      - description: Pin
+        in: body
+        name: data
+        required: true
+        schema:
+          $ref: '#/definitions/api.PinMessageInGroupRequest'
+      - description: Registered Phone Number
+        in: path
+        name: number
+        required: true
+        type: string
+      - description: Group Id
+        in: path
+        name: groupid
+        required: true
+        type: string
+      produces:
+      - application/json
+      responses:
+        "200":
+          description: OK
+          schema:
+            type: string
+        "400":
+          description: Bad Request
+          schema:
+            $ref: '#/definitions/api.Error'
+      summary: Pin a message in a Signal Group.
+      tags:
+      - Groups
   /v1/groups/{number}/{groupid}/quit:
     post:
       consumes: