curl --request POST \
  --url https://api.example.com/{version}/sessions/refund \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "original_payment_intent_id": 123,
  "amount": 1.01,
  "expires_at": "2023-11-07T05:31:56Z",
  "reason": "<string>"
}
'

{
  "id": 123,
  "original_payment_intent_id": 123,
  "amount": 1.01,
  "status": "<string>",
  "expires_at": "2023-11-07T05:31:56Z",
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "reason": "<string>"
}