curl --request POST \
  --url https://api.orafi.app/v1/transactions/refund \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "transactionId": "<string>",
  "amount": 123
}
'

{
  "success": true,
  "message": "<string>",
  "data": {
    "id": "<string>",
    "amount": 123,
    "status": "<string>",
    "transactionId": "<string>"
  }
}