json_schema: {
      "properties": {
          "email": {
              "format": "email",
              "type": [
                  "string",
                  "null"
              ]
          },
          "name": {
              "maxLength": 255,
              "minLength": 2,
              "type": "string"
          }
      },
      "required": [
          "name"
      ],
      "type": "object"
  }