{
  "operation": "header",
  "header": {
    "protocol": "yachtmemory.signalk-catalog/2",
    "vessel_id": "e4b76f55-6bd9-4a2e-ab5a-8c538d9311fd",
    "snapshot_id": "c3bb73f2-52af-45c4-a8f9-ccddac3cbf28",
    "revision": 2,
    "discovered_at_utc": "2026-11-03T14:00:00.000Z",
    "scope": "current-selected-sources",
    "inventory_coverage": "selected-only",
    "transport_complete": true,
    "chunk_count": 2,
    "record_count": 5,
    "document_sha256": "cf18f84657f19614534cad53fb32fb27c7c083b8331173fa340516ff83711a9a"
  }
}
