{
  "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": 1,
    "records": [
      {
        "kind": "observation",
        "path": "test.catalog.voltage",
        "source": "synthetic.source"
      },
      {
        "kind": "observation",
        "path": "test.catalog.wind",
        "source": "synthetic.source"
      },
      {
        "kind": "path",
        "path": "test.catalog.battery",
        "value_type": "number",
        "metadata": {
          "units": null
        }
      }
    ],
    "payload_sha256": "24c0bcf646b874b895fdee539165c49893947453ebd041c2a3fe1a0b2051c3fe"
  }
}