ChatItem

{
    "id": 0,
    "user_id": 0,
    "icon": "string",
    "role_id": 0,
    "role_name": "string",
    "chat_id": "string",
    "model_id": 0,
    "model": "string",
    "title": "string",
    "created_at": 0,
    "updated_at": 0
}