{
  "lead_id": "lead-4812",
  "calendar_id": "sales@example.com",
  "title": "Demo call: Acme / n8n",
  "start": "2026-06-02T10:00:00+03:00",
  "end": "2026-06-02T10:45:00+03:00",
  "timezone": "Europe/Moscow",
  "attendees": [
    "client@example.com",
    "manager@example.com"
  ],
  "source": "tilda",
  "send_updates": "all"
}