{
  "protocol_version": "commerce/1.0",
  "event_id": "evt-fac-9001",
  "type": "invoice.issued",
  "occurred_at": "2026-10-21T15:25:00-05:00",
  "data": {
    "reference": "CC-1042",
    "number": "FEV-9001",
    "issued_at": "2026-10-21T15:24:40-05:00",
    "cufe": null,
    "pdf_url": "https://erp.ejemplo.com/facturas/tmp/FEV-9001.pdf"
  }
}