{
  "event_id": "bell-event-00000042",
  "producer_id": "brain-school-a",
  "source_event_id": "evt-area-20260831-0001",
  "disposition": "duplicate",
  "payload_sha256": "4cc1e93820195caf713ea675ff33f178c9d4997dd8a81cb61287e9fea0e3d5e1"
}