{
    "return_code": "SUCCESS",
    "return_msg": "OK",
    "appid": "wx2421b1c4370ec43b",
    "mch_id": "10000100",
    "nonce_str": "ec2316275641faa3aacf3cc599e8730f",
    "user_state": "NORMAL",
    "result_code": "SUCCESS",
    "sign": "EE088059BBC9141264F8D14293AD6C4BB94CEA8C08AA98FBF93E262D445F8FF5",
    "plate_number_info": "{\"plate_number_info\":[{\"plate_number\":\"粤B888888\",\"channel_type\":\"ETC\"}]}"
}