curl --request POST \
  --url https://openplatform.gateapi.io/payment/open/institution/v1/pay/address/refundconvert \
  --header 'Content-Type: application/json' \
  --header 'X-GatePay-Certificate-ClientId: <x-gatepay-certificate-clientid>' \
  --header 'X-GatePay-Nonce: <x-gatepay-nonce>' \
  --header 'X-GatePay-On-Behalf-Of: <x-gatepay-on-behalf-of>' \
  --header 'X-GatePay-Signature: <x-gatepay-signature>' \
  --header 'X-GatePay-Timestamp: <x-gatepay-timestamp>' \
  --data '
{
  "refundRequestId": "483902480932841787",
  "prepayId": "1665553233227833",
  "refundOrderCurrency": "BTC",
  "refundOrderAmount": "1.1",
  "refundPayCurrency": "USDT",
  "refundPayAmount": "1000.1",
  "refundReason": "refund test",
  "receiverId": 123456
}
'

{
  "status": "SUCCESS",
  "code": "00000",
  "errorMessage": "",
  "data": {
    "refundRequestId": "483902480932841787",
    "prepayId": "1665553233227833",
    "orderCurrency": "BTC",
    "orderAmount": "2.2",
    "refundOrderAmount": "1.1",
    "payCurrency": "USDT",
    "payAmount": "44000",
    "refundPayAmount": "1000.1"
  }
}