json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "id": "http://toyatech.net/cmsapp/events",
      "definitions": {
          "AttendanceRecord": {
              "type": "object",
              "properties": {
                  "name": {
                      "type": "string"
                  },
                  "count": {
                      "type": "integer"
                  }
              }
          }
      },
      "properties": {
          "AttendanceRecord": {
              "$ref": "#/definitions/AttendanceRecord"
          }
      },
      "required": [
          "AttendanceRecord"
      ]
  }