I have a workflow with Woocommerce and Customer.io. I send Woocommerce order details to customer.io using the customer.io create event action. In the custom data section I have a label data[line-items] with a value of the line-items from the Woocommerce order. This is a JSON with all order lines. (see screenshot) The event is sent successfully to customer.io. BUT... the line-item attribute contains the JSON in double quotes. Because of the double quotes the JSON is not a JSON in customer.io but a string (see other screenshot). How can I omit or remove the double quotes?