接口：https://api.weixin.qq.com/card/giftcard/pay/submch/bind?access_token=TOKEN

参数：{"sub_mch_id":"1599299871","wxa_appid":"wx639716a5e31599d0"}

响应信息：{"errcode":-1,"errmsg":"system error hint: [2.IIkA0179r221]"}

请求时间：2020-12-14 10:49:39.700