Webhooks in Oracle CX ?

We are working on a integration project with JustCall as our telephone system. We have a requirement to sync all contacts with JustCall and any new contacts created or existing contacts updated to be sync with JustCall. Webhooks will be apt for this requirement. We see a lot of REST API's is there a way we can implement this requirement using webhooks. Or is there a playbook for this use case. Could you please provide some guidance.