{
    "$jsonSchema": {
        "required": [
            "user",
            "channel",
            "content",
            "stickers",
            "attachments"
        ],
        "properties": {
            "user": {
                "bsonType": "long",
                "description": "Discord ID of user"
            },
            "channel": {
                "bsonType": "int",
                "description": "Discord ID of a channel"
            },
            "content": {
                "bsonType": ["null", "string"],
                "description": "Text of the message"
            },
            "stickers": {
                "bsonType": "array",
                "items": {
                    "bsonType": "object",
                    "required": [
                        "id",
                        "name",
                        "format",
                        "url"
                    ],
                    "properties": {
                        "id": {
                            "bsonType": "int"
                        },
                        "name": {
                            "bsonType": "string"
                        },
                        "format": {
                            "bsonType": "array"
                        },
                        "user": {
                            "bsonType": "string"
                        }
                    }
                }
            },
            "attachments": {
                "bsonType": "array"
            }
        }
    }
}