json_schema: {
      "definitions": {
          "FlexibleStat": {
              "type": "object",
              "additionalProperties": false,
              "properties": {
                  "name": {
                      "type": "string"
                  },
                  "type": {
                      "type": "string"
                  },
                  "id": {
                      "type": "string"
                  },
                  "contentId": {
                      "type": "string"
                  }
              },
              "required": [
                  "name",
                  "type",
                  "id",
                  "contentId"
              ]
          }
      },
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "array",
      "items": {
          "$ref": "#/definitions/FlexibleStat"
      }
  }