ChatMsgResponseItem(ChatMsgResponseItem)

{
    "local_id": 0,
    "server_id": "string",
    "local_type": 0,
    "sender": "string",
    "create_time": "string",
    "status": 0,
    "upload_status": 0,
    "download_status": 0,
    "origin_source": 0,
    "content": "string",
    "source": "string",
    "packed_info_data": {
        "property1": "string",
        "property2": "string"
    }
}