json_schema: {
      "additionalProperties": false,
      "properties": {
          "id": {
              "pattern": "^[a-z0-9-]+$",
              "type": "string"
          },
          "title": {
              "type": "string"
          }
      },
      "required": [
          "id",
          "title"
      ],
      "title": "Category",
      "type": "object"
  }