Can we register a remote event receiver when any site collection gets created?

Hi,

There is no any "SiteCreated" or "SiteCreating" type of event receiver in app model. But, I want to trigger some events on the site collection creation. There are some web level events in the app model but I need some sort of functionality which will execute when any site collection gets created. 

Please share your thoughts on this.

Thanks,
Lalit Kumar Mishra