ASP.NET 5 Identity with one table and 4 columns

I creating an ASP.NET MVC 6 application which uses Identity with Entity Framework on SQL Server. By default, it creates 5 tables in the database

1. AspNetRoles
2. AspNetClaims
3. AspNetLogins
4. AspNetRoles
5. AspNetUsers

But I want only 1 table in the database instead of these 5 with 4 columns integer Identity Column, UserName, Email and Password (Hashed). How do I implement or create a custom user store?