curl --location --request POST 'http://dev-cn.your-api-server.com/v3/alipay/marketing/certificate/order/refundconfirmcommit' \
--header 'authorization: ALIPAY-SHA256withRSA app_id=$appid,timestamp=$now,nonce=$uuid,expired_seconds=600,sign=$sign' \
--header 'alipay-request-id: $requestid' \
--header 'Content-Type: application/json' \
--data-raw '{
"user_id":"2088xxxx",
"certificate_id":"2016042700826004508401111111",
"order_id":"2015042321001004720200028594",
"result":"ACCEPT",
"reason":"不符合退款条件:商家线下协商后已经退款",
"code":"拒绝退款的三方码"
}'