{
  "operation": "chunk",
  "chunk": {
    "protocol": "yachtmemory.signalk-catalog/2",
    "vessel_id": "e4b76f55-6bd9-4a2e-ab5a-8c538d9311fd",
    "snapshot_id": "02ef2f86-499b-44c7-b6be-40c425df3281",
    "revision": 1,
    "chunk_index": 0,
    "records": [
      {
        "kind": "observation",
        "path": "test.catalog.temperature",
        "source": "synthetic.source"
      },
      {
        "kind": "path",
        "path": "test.catalog.temperature",
        "value_type": "number",
        "metadata": {
          "units": "K"
        }
      },
      {
        "kind": "source",
        "source": "synthetic.source",
        "type": "TEST",
        "label": "Synthetic only"
      }
    ],
    "payload_sha256": "a20b3cd2289a96bdd652936ebedce61a768f070870a143417c7334a16cdddc46"
  }
}