curl --request POST \
  --url https://api.example.com/v1/finances/refunds/ \
  --header 'Content-Type: application/json' \
  --data '
{
  "payment_type": 123,
  "payment_amount": "<string>",
  "reason": "<string>",
  "request": 123,
  "sale": 123
}
'

{
  "id": 123,
  "reason": "<string>"
}