json_schema: {
      "additionalProperties": false,
      "description": "An add_to_wishlist GTM server-side event.",
      "properties": {
          "currency": {
              "description": "Currency of the items associated with the event, in 3-letter ISO 4217 format. Is required, if value is set.",
              "maxLength": 3,
              "minLength": 3,
              "type": [
                  "string",
                  "null"
              ]
          },
          "items": {
              "description": "The items for the event.",
              "items": {
                  "additionalProperties": false,
                  "description": "An item object.",
                  "properties": {
                      "affiliation": {
                          "description": "A product affiliation to designate a supplying company or brick and mortar store location",
                          "maxLength": 4096,
                          "type": [
                              "string",
                              "null"
                          ]
                      },
                      "coupon": {
                          "description": "The coupon name or code associated with the item.",
                          "maxLength": 4096,
                          "type": [
                              "string",
                              "null"
                          ]
                      },
                      "currency": {
                          "description": "The currency, in 3-letter ISO 4217 format.",
                          "maxLength": 3,
                          "minLength": 3,
                          "type": [
                              "string",
                              "null"
                          ]
                      },
                      "discount": {
                          "description": "The monetary discount value associated with the item.",
                          "minimum": 0,
                          "type": [
                              "number",
                              "null"
                          ]
                      },
                      "index": {
                          "description": "The index of the item in a list.",
                          "minimum": 0,
                          "type": [
                              "integer",
                              "null"
                          ]
                      },
                      "item_brand": {
                          "description": "The brand of the item.",
                          "maxLength": 4096,
                          "type": [
                              "string",
                              "null"
                          ]
                      },
                      "item_category": {
                          "description": "The category of the item.",
                          "maxLength": 4096,
                          "type": [
                              "string",
                              "null"
                          ]
                      },
                      "item_category2": {
                          "description": "The second category hierarchy or additional taxonomy for the item.",
                          "maxLength": 4096,
                          "type": [
                              "string",
                              "null"
                          ]
                      },
                      "item_category3": {
                          "description": "The third category hierarchy or additional taxonomy for the item.",
                          "maxLength": 4096,
                          "type": [
                              "string",
                              "null"
                          ]
                      },
                      "item_category4": {
                          "description": "The fourth category hierarchy or additional taxonomy for the item.",
                          "maxLength": 4096,
                          "type": [
                              "string",
                              "null"
                          ]
                      },
                      "item_category5": {
                          "description": "The fifth category hierarchy or additional taxonomy for the item.",
                          "maxLength": 4096,
                          "type": [
                              "string",
                              "null"
                          ]
                      },
                      "item_id": {
                          "description": "The ID of the item.",
                          "maxLength": 500,
                          "type": [
                              "string",
                              "null"
                          ]
                      },
                      "item_list_id": {
                          "description": "The ID of the list in which the item was presented to the user.",
                          "maxLength": 4096,
                          "type": [
                              "string",
                              "null"
                          ]
                      },
                      "item_list_name": {
                          "description": "The name of the list in which the item was presented to the user.",
                          "maxLength": 4096,
                          "type": [
                              "string",
                              "null"
                          ]
                      },
                      "item_name": {
                          "description": "The name of the item.",
                          "maxLength": 500,
                          "type": [
                              "string",
                              "null"
                          ]
                      },
                      "item_variant": {
                          "description": "The item variant or unique code or description for additional item details or options.",
                          "maxLength": 4096,
                          "type": [
                              "string",
                              "null"
                          ]
                      },
                      "location_id": {
                          "description": "The location associated with the item.",
                          "maxLength": 4096,
                          "type": [
                              "string",
                              "null"
                          ]
                      },
                      "price": {
                          "description": "The monetary price of the item, in units of the specified currency parameter.",
                          "minimum": 0,
                          "type": [
                              "number",
                              "null"
                          ]
                      },
                      "quantity": {
                          "description": "Item quantity.",
                          "minimum": 0,
                          "type": [
                              "integer",
                              "null"
                          ]
                      }
                  },
                  "type": "object"
              },
              "type": "array"
          },
          "value": {
              "description": "The monetary value of the event.",
              "minimum": 0,
              "type": [
                  "number",
                  "null"
              ]
          }
      },
      "required": [
          "items"
      ],
      "self": {
          "format": "jsonschema",
          "name": "add_to_wishlist",
          "vendor": "com.google.tag-manager.server-side",
          "version": "1-0-0"
      },
      "type": "object"
  }