Webhook from to Intercom

Looking to create an intagration from a webform data coming via a webhook and Intercom.
Where I get the hold up is when a contact already exist in Intercom, the scenario crashes. I tried to use the Intercom “List Contacts” module into a router with a filter that was matching the emails and a fallback route but without success.

Anyone able to help me? Thanks!

For Admin, “Intercom” is not a tag