Authenticate requests going through Elastic Load Balance using Cognito

We are receiving HTTPS traffic to our Elastic Load Balancer. We are currently using the ELB to authenticate but we would like have the authentication be performed by Cognito and then have the traffic get forwarded to the proper DNS entries. Can someone provide some context on how I can accomplish this? It appears that all I need to do is create a path based rule in the Load Balancer that authenticates using Cognito and then forwards the request to the proper location. 

thank you!