curl --request POST \
  --url https://api.pagou.ai/pix/v1/payment/refund/{id} \
  --header 'Content-Type: application/json' \
  --header 'apiKey: <api-key>' \
  --data '
{
  "value": 1,
  "description": "<string>"
}
'

{
  "refundId": "rfd_2ec3f2e53b53470dbaf0fcb1afac58b8",
  "transactionId": "trn_2d02fb2dbfa5479bbd8ec8ad5d629b9e",
  "status": "REFUND_IN",
  "value": 1200,
  "createdAt": "2026-02-07T13:20:03.000Z"
}