Sub-domain based routing instruction for Ingress via Nginx

Hi Team,

I'm new in kubernetes domain, and looking for routing solution  where traffic can be routed to different apps on basis of sub-domain. 
 *.domain.com -> ELB -> ingress-controller(Nginx)-> app1.domain.com ---> app1
                                                                                 -> app2.domain.com ---> app2

Can someone suggest some reference.

Thanks

