群成员新增

{
    "data": {
        "avatar": "",
        "is_manager": 1,
        "manager_wxid": "wxid_5cg2ixxxx",
        "member_list": [{
            "nickname": "Mr.Name",
            "wxid": "wxid_xxxx",
            "invite_by": "wxid_xxxx", // 邀请人wxid
        }],
        "nickname": "测试群名",     
        "room_wxid": "223xxxx7@chatroom",
        "total_member": 5
    },
    "type": 1
}