Will it be difficult to rewrite and write my own asp.net mvc Identity implementation?

Question

ASP.NET

I don't like the implementation from the database, in aspnet mvc identity and this owin provider.
There is one plus, you do not need to register authorization through all sorts of googles, githubs, twitters, etc. Minus - these are tables with "aspnetUsers", and its implementation in userManager
, etc.

Answer 1

So you can replace almost any class there with UserManager, SignInManager, etc.
And there will be any database structure you need