MessageVO

{
    "header": {
        "noPersist": 0,
        "redDot": 0,
        "syncOnce": 0
    },
    "setting": 0,
    "messageId": 0,
    "clientMsgNo": "string",
    "messageSeq": 0,
    "fromUid": "string",
    "channelId": "string",
    "channelType": "string",
    "timestamp": 0,
    "payload": "string",
    "nickName": "string",
    "pic": "string",
    "sendUserType": 0
}