{
  "details": {
    "amount_in_cents": 123,
    "message_to_payer": "<string>"
  },
  "refund_created_at": "2026-05-28T14:30:00Z",
  "refund_id": 123,
  "refund_updated_at": "2026-05-28T14:30:00Z",
  "transaction_id": 123,
  "external_reference_id": "<string>",
  "failed_message": "<string>"
}