用jmessage-react-plugin 遇到点问题

当会话列表是空的时候，用户第一次发消息来，我发现from 里面，没有nickname和address，当用户再发消息来，它就有这2个字段了。

{
"extras": {},
"target": {
"isNoDisturb": false,
"type": "user",
"isFriend": false,
"gender": "unknown",
"nickname": "用户15xxx67",
"isInBlackList": false,
"avatarThumbPath": "",
"username": "1596xxx7",
"address": "xx",
"appKey": "075dcd70f7xxxxa5f"
},
"id": "msgId_1526955988741531",
"from": {
"isNoDisturb": false,
"username": "13xxxx5",
"isFriend": false,
"gender": "unknown",
"type": "user",
"isInBlackList": false,
"avatarThumbPath": ""
},
"serverMessageId": "1016833119",
"text": "😔",
"type": "text",
"createTime": 1526955988542
}