{
  "operation": "chunk",
  "chunk": {
    "protocol": "yachtmemory.signalk-catalog/2",
    "vessel_id": "e4b76f55-6bd9-4a2e-ab5a-8c538d9311fd",
    "snapshot_id": "1c4f72de-f234-46d6-81a4-8a046dc7e811",
    "revision": 6,
    "chunk_index": 0,
    "records": [
      {
        "kind": "observation",
        "path": "test.catalog.battery",
        "source": "synthetic.source"
      },
      {
        "kind": "observation",
        "path": "test.catalog.depth",
        "source": "synthetic.source"
      },
      {
        "kind": "observation",
        "path": "test.catalog.temperature",
        "source": "synthetic.source"
      }
    ],
    "payload_sha256": "e79285e6a0d50f68b3d601b2e6ff284c5141418c3919ad628a01c5a94131479c"
  }
}