{"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":"3a7b94ef-f4c1-d4de-9ad8-83b02c6b03a8","errors":[{"field":"email_address","message":"This value should not be blank."}]}