diff --git a/src/template_project/adapters/unit_of_work.py b/src/template_project/adapters/unit_of_work.py
index e714bf0..505cb2c 100644
--- a/src/template_project/adapters/unit_of_work.py
+++ b/src/template_project/adapters/unit_of_work.py
@@ -13,8 +13,7 @@ class DefaultUnitOfWork(UnitOfWork):
 
     @override
     async def add(self, *entities: Any) -> None:
-        filtered_entities = [copy.copy(entity) if isinstance(entity, Entity) else entity for entity in entities]
-        self._session.add_all(filtered_entities)
+        self._session.add_all(entities)
         await self._session.flush()
 
     @override
diff --git a/src/template_project/application/user/entity.py b/src/template_project/application/user/entity.py
index 886a1bb..e4ccab4 100644
--- a/src/template_project/application/user/entity.py
+++ b/src/template_project/application/user/entity.py
@@ -11,14 +11,14 @@ UserId = NewType("UserId", UUID)
 
 @to_entity
 class User(Entity[UserId]):
-    email: str
-    hashed_password: str
+    email: str | None
+    hashed_password: str | None
 
     @classmethod
     def factory(
         cls,
-        email: str,
-        hashed_password: str,
+        email: str | None = None,
+        hashed_password: str | None = None,
     ) -> Self:
         return cls(
             id=UserId(uuid7()),