curl --request POST \
  --url 'https://api.stateset.com/api/v1/asns/{id}/cancel' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{}'

{
  "data": {
    "cancellation_reason": "string",
    "cancellation_timestamp": "2026-07-24T12:00:00Z",
    "id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
    "status": "string",
    "supplier_notified": true,
    "version": 1
  },
  "errors": null,
  "message": null,
  "meta": null,
  "success": true
}