You should be able to do this with a subquery condition on your primary table - looking up Ententiy Subscription with a “filterable” condition adn then creating a toggle filter that activates that condition. 

If for some random reason Salesforce doesn’t let you build subquery conditions on that object.  You can create the “My Subscriptions” model (make it first in the list) and then make a second model that has a filterable condition that limits the table to records that are the parent record of the items in the My Subscriptions model. 

That should work. 

PS - whenever filters don’t work,  look in the browser console at the model information to see the specific SOQL that is being run and the specific conditions (and values) that are in place.  Open the console and type   “skuid.model.map()”   and off you go…

Thank you Rob using subquery condition worked.