{
  "schema_version": "2.0",
  "event_id": "transcript.updated-event-a",
  "event_type": "transcript.updated",
  "tenant_id": "tenant-a",
  "tenant_key": "tenant-a",
  "trace_id": "trace-1",
  "occurred_at": "2026-09-18T00:00:01Z",
  "aggregate_type": "transcript_segment",
  "aggregate_id": "segment-1",
  "aggregate_version": 1,
  "payload": {
    "call_id": "call-a",
    "turn_id": "turn-1",
    "segment_id": "segment-1",
    "role": "customer",
    "revision": 1,
    "text": "您好",
    "is_final": true,
    "start_ms": 0,
    "end_ms": 600,
    "playback_state": "not_applicable"
  },
  "dispatcher_id": "c046b893-8628-4589-ae50-619d049248a6"
}