{
    "sub_mchid": "1900000109",
    "out_parking_no": "1231243",
    "plate_number": "粤B888888",
    "plate_color": "BLUE",
    "notify_url": "https://yoursite.com/wxpay.html",
    "start_time": "2017-08-26T10:43:39+08:00",
    "parking_name": "欢乐海岸停车场",
    "free_duration": 3600
}