{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/SystemMetadata",
  "title": "SystemMetadata",
  "type": "object",
  "description": "System-level metadata associated with a metadata change, including ingestion run identifiers and provenance information.",
  "properties": {
    "runId": {
      "type": "string",
      "description": "The identifier of the ingestion run that produced this change."
    },
    "lastObserved": {
      "type": "integer",
      "format": "int64",
      "description": "The timestamp when this metadata was last observed in epoch milliseconds."
    },
    "registryName": {
      "type": "string",
      "description": "The name of the model registry associated with this change."
    },
    "registryVersion": {
      "type": "string",
      "description": "The version of the model registry."
    }
  }
}