{
  "schema_version": "1.0",
  "timestamp": "2026-09-21T09:41:02.184Z",
  "severity": "INFO",
  "event_id": "evt_demo_003",
  "event_name": "usage.recorded",
  "service": "assistant-worker",
  "attributes": {
    "input_tokens": 1240,
    "output_tokens": 386,
    "usage_source": "sample",
    "usage_complete": true
  }
}