Is there any way to implement subscription-key based ip restriction?

I explored apim it is an incredible service. However, my case is that I want to have one product with multiple subscriptions with ip restriction policy. What I saw is under one product policies are not working.
For example: I created two subscriptions one should be accesssible over ip-a and other on ip-b and when I declare this in product policy it does not work.

Please suggest a workaround.

Thanks!

Start by reviewing the reported product-policy behavior in Azure API Management and the two-subscription scenario described in the issue. Determine whether subscription-specific IP restrictions are supported and identify the scope of any documented workaround; completion should provide a verified answer or a clearly scoped implementation proposal.

Written by the indexing model from the issue text.