curl --request POST \
  --url https://api.unibee.dev/merchant/payment/refund/new \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "currency": "<string>",
  "externalRefundId": "<string>",
  "paymentId": "<string>",
  "refundAmount": 123,
  "metadata": {},
  "reason": "<string>"
}
'

{
  "code": 123,
  "data": {
    "externalRefundId": "<string>",
    "paymentId": "<string>",
    "refundId": "<string>",
    "status": 123
  },
  "message": "<string>",
  "redirect": "<string>",
  "requestId": "<string>"
}