Use JpaRepository interaction style without entity

Question

I like the idea of using interface, which extends JpaRepository<T, ID>. It's very clear and elegant. I also know that this interface is always needs an entity type. But sometimes I don’t have an entity, but I want to use this way of interaction with the DB. I already can use methods which interact with entity A(or which doesn't even have an entity) in the B entity repository (JpaRepository<B, ID>), so obviously this is not a problem for JPA. But It's not so clear and elegant. I want something like this:

public interface ICustomTableRepo extends JpaRepository<Void, Void> {
    @Query(nativeQuery = true, value = "SELECT * FROM custom_table")
    List<Object[]> getAllFromCustomTable();
}

I want to annotate method declaration with @Query which has SQL query.

You can see that I don't want to use entity in this interface at all. But, of course, JpaRepository with <Void, Void> does not work.

So, how can I use this or same type of interaction with DB without EntityManager and without JpaRepository with different entity?