❔ Customizing assigned roles on sign in using SignInManager

Hi. I'm building a multi-tenant application where a user can have access to multiple tenants. My identity is based on ASP.NET Identity. I'm using the built in UserManager, RoleManager and SignInManager. Each tenant can create roles and grant those roles various permissions. Simplified table setup looks like this: I'm struggling with customizing the functionality of SignInManager.SignInAsync , so it only adds the roles a given user has for whichever tenant is signed into