curl --location '/uspay/uooshoppay/open/api/transaction/refund' \
--header 'Content-Type: application/json' \
--data '{
"merchantNo": "123456789",
"orderNo": "6133",
"merchantId": "1234",
"amount": "0.01",
"currency": "USD",
"remark": "测试",
"requestId": "test001",
"notifyUrl": "http://127.0.0.1:8100/refund/notify"
}'{
"code": 200,
"message": "SUCCESS",
"refundId": "614371878341791000074114"
}