json_schema: {
      "additionalProperties": true,
      "description": "The most generic type of item. Schema.org: http://schema.org/Thing",
      "properties": {
          "additionalType": {
              "description": "An additional type for the item, typically used for adding more specific types from external vocabularies in microdata syntax. This is a relationship between something and a class that the thing is in. In RDFa syntax, it is better to use the native RDFa syntax - the 'typeof' attribute - for multiple types. Schema.org tools may have only weaker understanding of extra types, in particular those defined externally.",
              "type": "string"
          },
          "alternateName": {
              "description": "An alias for the item.",
              "type": "string"
          },
          "description": {
              "description": "A short description of the item.",
              "type": "string"
          },
          "id": {
              "type": "string"
          },
          "image": {
              "description": "URL of an image of the item.",
              "format": "uri",
              "type": "string"
          },
          "name": {
              "description": "The name of the item.",
              "type": "string"
          },
          "sameAs": {
              "description": "URL of a reference Web page that unambiguously indicates the item's identity. E.g. the URL of the item's Wikipedia page, Freebase page, or official website.",
              "type": "string"
          },
          "url": {
              "description": "URL of the item.",
              "format": "uri",
              "type": "string"
          },
          "version": {
              "type": "integer"
          }
      },
      "required": [
          "id",
          "name",
          "description"
      ],
      "type": "object"
  }