curl --request GET \
  --url https://api.sandbox.zafapay.com/v1/payments/{id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "tx_abc123",
  "request_id": "req_xyz789",
  "status": "completed",
  "amount": "17.62",
  "currency": "usd",
  "capture_method": "automatic",
  "psp_reference": "pi_xxxxx",
  "external_id": "order_12345",
  "amount_refunded": "0",
  "refunds": [
    {
      "id": "orf_xyz789",
      "amount": "5.50",
      "status": "succeeded",
      "reason": "お客様都合",
      "created_at": "2024-01-15T10:35:00Z"
    }
  ],
  "metadata": {},
  "created_at": "2024-01-15T10:30:00Z",
  "updated_at": "2024-01-15T10:31:00Z"
}