Check Shopify "Customer Accepts Marketing" field before Add Contact in EmailOctopus?

I’m just setting up a Zap for a New Paid Order in Shopify to Add/Update Contact in EmailOctopus. We have a marketing consent check box at checkout that passes true/false to a Customer Accepts Marketing field. However, there is no corresponding field in the EmailOctopus fields. How can we confirm this status before adding the customer to the list? As it is currently, it would everyone to the list regardless of their consent.