LocationPointChangeMessage(定位点位变动消息)

{
    "msgType": 0,
    "ackId": 0,
    "msgId": 0,
    "recvId": "string",
    "sendId": "string",
    "sendTime": 0,
    "content": {
        "cid": "string",
        "did": "string",
        "lon": "string",
        "lat": "string",
        "radius": 0,
        "positionTime": 0,
        "traceId": "string"
    }
}