{
  "additionalProperties": true,
  "description": "Outer envelope. Sessions are left as raw dicts so the ingest service\ncan validate each one independently - a malformed session should not\nfail the whole batch.",
  "properties": {
    "sessions": {
      "items": {
        "additionalProperties": true,
        "type": "object"
      },
      "maxItems": 25,
      "title": "Sessions",
      "type": "array"
    },
    "source": {
      "title": "Source",
      "type": "string"
    }
  },
  "required": [
    "source",
    "sessions"
  ],
  "title": "IngestEnvelopeV1",
  "type": "object"
}