{
  "duration_minutes": 60,
  "buffer_minutes": 15,
  "forbidden_start_utc": [
    "2026-04-24T15:00:00Z"
  ],
  "fallback_start_utc": "2026-04-24T15:00:00Z",
  "fallback_end_utc": "2026-04-24T16:00:00Z"
}