curl --request GET \
  --url https://vpos-sandbox.payven.com.tr/api/v1/cancellation-requests \
  --header 'Authorization: Bearer <token>'

{
  "items": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "transaction_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "merchant_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "requested_by": "<string>",
      "requested_at": "2023-11-07T05:31:56Z",
      "reason": "<string>",
      "reviewed_by": "<string>",
      "reviewed_at": "2023-11-07T05:31:56Z",
      "review_note": "<string>",
      "void_error_code": "<string>",
      "void_error_message": "<string>",
      "transaction": {
        "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "amount": 123,
        "currency": "<string>",
        "status": "<string>",
        "created": "2023-11-07T05:31:56Z",
        "masked_card_number": "<string>",
        "connector_name": "<string>"
      }
    }
  ],
  "page": 123,
  "total_pages": 123,
  "total_count": 123,
  "has_previous_page": true,
  "has_next_page": true
}