Failing in verify webhook due to certificate check

I'm trying to create a webhook. I'm working as developer and I don't have a SSL certificate. When the service tries to check my webhook, I got a INVALID_WEBHOOK_URL code due to certificate check while accessing my web service in WildFly.  I'd like to configure my developer account on AdobeSign for ignoring the SSL certificate but I could't find this setting in any menu option. Is it possible to turn the certificate checking off ? Thanks in advance.