Finding Unique count of an event using first party id and not ECID
Is there a way to find the unique count of an event based of first party id instead of ECID.
For example: If the event is triggered every time user performs an interaction like page view. I want to see how many times have known users (based of Hashed First Party Ids) have visited the page. If i create a visitor scope segment for this it would consider all UVs based of their ECID and tell me the count based off unique visitors. However I'm wishing to get this count for each known user instead.
Thanks