json_schema: {
      "additionalProperties": false,
      "description": "Schema for a Google Analytics Ecommerce transaction item",
      "properties": {
          "category": {
              "maxLength": 500,
              "type": "string"
          },
          "code": {
              "maxLength": 500,
              "type": "string"
          },
          "currency": {
              "maxLength": 3,
              "minLength": 3,
              "type": "string"
          },
          "name": {
              "maxLength": 500,
              "type": "string"
          },
          "price": {
              "multipleOf": 0.01,
              "type": "number"
          },
          "quantity": {
              "type": "integer"
          }
      },
      "self": {
          "format": "jsonschema",
          "name": "item",
          "vendor": "com.google.analytics.ecommerce",
          "version": "1-0-0"
      },
      "type": "object"
  }