{
  "type": "object",
  "additionalProperties": {
    "auto_join_users": { "type": "boolean" },
    "current_user_membership": {
      "type": ["object"],
      "properties": {
        "last_read_message_id": { "type": ["number", "null"] },
        "muted": { "type": "boolean" },
        "unread_count": { "type": "number" },
        "unread_mentions": { "type": "number" },
        "desktop_notification_level": { "type": "string" },
        "mobile_notification_level": { "type": "string" },
        "following": { "type": "boolean" }
      }
    }
  },
  "properties": {
    "id": { "type": "number" },
    "chatable_type": { "type": "string" },
    "chatable_url": { "type": "string" },
    "title": { "type": "string" },
    "chatable_id": { "type": "number" },
    "last_message": { "type": ["object", "null"] },
    "status": { "type": "string" },
    "chatable": {
      "type": "object",
      "required": ["id", "name", "slug", "color"]
    }
  }
}