Refund via payment route (deprecated)

curl --request POST \
  --url https://api.suby.fi/api/payment/{paymentId}/refund \
  --header 'Content-Type: application/json' \
  --header 'X-Suby-Api-Key: <api-key>' \
  --data '
{
  "reason": "<string>"
}
'

{
  "success": true,
  "data": {
    "paymentId": "<string>",
    "status": "<string>"
  }
}