curl --location '/open-api/partner/payment/refund' \
--header 'Content-Type: application/json' \
--data '{
"appId": "abc4430d8e514099a6486dabfb51f772",
"sign": "sign by param",
"param": "{\"countryCode\":\"ID\",\"originalTransactionId\":\"CU5P8761566907666432\",\"mchRefundOrderId\":\"refund488455086162\",\"refundAmount\":10000,\"refundReason\":\"testRefund\",\"refundCallbackUrl\":\"http://www.test.com\",\"timestamp\":1722415059,\"subMerchantNo\":\"E0515qaQWJ9d\",\"authId\":\"AUTH202605150436\"}"
}'