{"type":"https:\/\/mailchimp.com\/developer\/marketing\/docs\/errors\/","title":"Invalid Resource","status":400,"detail":"The resource submitted could not be validated. For field-specific details, see the 'errors' array.","instance":"3c66544c-1be6-60a0-c409-8f35501e3f9b","errors":[{"field":"email_address","message":"This value should not be blank."}]}