SetChatRoomTopMsgModel(SetChatRoomTopMsgModel)

{
    "guid": "",
    "room_username": "string",
    "summary": "string",
    "msg_info": {
        "from_username": "string",
        "to_username": "string",
        "chatroom_sender": "string",
        "create_time": 0,
        "desc": "string",
        "msg_id": "string",
        "msg_type": 0,
        "chatroom": "string",
        "source": "string",
        "content": "string"
    }
}