{"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":"f5077bc4-47e5-d748-1922-4ac01bdeced3","errors":[{"field":"email_address","message":"This value should not be blank."}]}