{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/metadata",
  "title": "metadata",
  "description": "User-defined metadata to store domain-specific information limited to 8 keys with scalar values.",
  "type": "object",
  "maxProperties": 8,
  "additionalProperties": {
    "nullable": true,
    "anyOf": [
      {
        "type": "string"
      },
      {
        "type": "number"
      },
      {
        "type": "boolean"
      }
    ]
  }
}