{
  "operation": "header",
  "header": {
    "protocol": "yachtmemory.signalk-catalog/2",
    "vessel_id": "e4b76f55-6bd9-4a2e-ab5a-8c538d9311fd",
    "snapshot_id": "6fb29b70-0ad8-4fd0-9bf0-3c4b0d2ee5cb",
    "revision": 4,
    "discovered_at_utc": "2026-11-03T16:00:00.000Z",
    "scope": "current-selected-sources",
    "inventory_coverage": "selected-only",
    "transport_complete": true,
    "chunk_count": 3,
    "record_count": 9,
    "document_sha256": "f1d90bd1c419cf8a6835bf77e6fd2961becc2444322c6e6e2f250157297e9cdf"
  }
}
