diff --git a/src/entities/models/dto.py b/src/entities/models/dto.py
index f06fce3..9c9eff3 100644
--- a/src/entities/models/dto.py
+++ b/src/entities/models/dto.py
@@ -1,5 +1,6 @@
-from typing import List, Dict, Any, Set
-from pydantic import BaseModel
+from typing import List, Dict, Any, Set, Optional
+from pydantic import BaseModel, Field
+from pydantic.utils import to_camel
 from starlette.authentication import BaseUser
 
 
@@ -41,12 +42,13 @@ class Config:
 
 
 class UserProfile(BaseModel):
-    firstName: str
-    lastName: str
-    leis: Set[str] = None
+    first_name: str = Field(alias='firstName')
+    last_name: str = Field(alias='lastName')
+    leis: Optional[Set[str]] = Field(alias='leis')
 
-    def get_user(self) -> Dict[str, Any]:
-        return {"firstName": self.firstName, "lastName": self.lastName}
+    class Config:
+        alias_generator = to_camel
+        # populate_by_name = True
 
 
 class AuthenticatedUser(BaseUser, BaseModel):
diff --git a/src/oauth2/oauth2_admin.py b/src/oauth2/oauth2_admin.py
index e02faf7..1f53072 100644
--- a/src/oauth2/oauth2_admin.py
+++ b/src/oauth2/oauth2_admin.py
@@ -88,7 +88,7 @@ def associate_to_lei(self, user_id: str, lei: str) -> None:
                 detail="No institution found for given LEI",
             )
 
-    def associate_to_lei_set(self, user_id, leis: Set[str]):
+    def associate_to_leis(self, user_id, leis: Set[str]):
         for lei in leis:
             self.associate_to_lei(user_id, lei)
 
diff --git a/src/routers/admin.py b/src/routers/admin.py
index 9d2163c..e64a246 100644
--- a/src/routers/admin.py
+++ b/src/routers/admin.py
@@ -21,12 +21,12 @@ async def get_me(request: Request):
 @router.put("/me/", status_code=HTTPStatus.ACCEPTED, dependencies=[Depends(check_domain)])
 @requires("manage-account")
 async def update_me(request: Request, user: UserProfile):
-    oauth2_admin.update_user(request.user.id, user.get_user())
+    oauth2_admin.update_user(request.user.id, user.dict(by_alias=True, exclude={'leis'}))
     if user.leis:
-        oauth2_admin.associate_to_lei_set(request.user.id, user.leis)
+        oauth2_admin.associate_to_leis(request.user.id, user.leis)
 
 
 @router.put("/me/institutions/", status_code=HTTPStatus.ACCEPTED, dependencies=[Depends(check_domain)])
 @requires("manage-account")
 async def associate_lei(request: Request, leis: Set[str]):
-    oauth2_admin.associate_to_lei_set(request.user.id, leis)
+    oauth2_admin.associate_to_leis(request.user.id, leis)
diff --git a/tests/api/routers/test_admin_api.py b/tests/api/routers/test_admin_api.py
index 675c498..9c066c8 100644
--- a/tests/api/routers/test_admin_api.py
+++ b/tests/api/routers/test_admin_api.py
@@ -60,7 +60,7 @@ def test_update_me_no_permission(self, app_fixture: FastAPI, auth_mock: Mock):
 
     def test_update_me(self, mocker: MockerFixture, app_fixture: FastAPI, authed_user_mock: Mock):
         update_user_mock = mocker.patch("oauth2.oauth2_admin.OAuth2Admin.update_user")
-        associate_lei_mock = mocker.patch("oauth2.oauth2_admin.OAuth2Admin.associate_to_lei_set")
+        associate_lei_mock = mocker.patch("oauth2.oauth2_admin.OAuth2Admin.associate_to_leis")
         update_user_mock.return_value = None
         associate_lei_mock.return_value = None
         client = TestClient(app_fixture)
@@ -80,10 +80,9 @@ def test_update_me_no_lei(self, mocker: MockerFixture, app_fixture: FastAPI, aut
         assert res.status_code == 202
 
     def test_associate_institutions(self, mocker: MockerFixture, app_fixture: FastAPI, authed_user_mock: Mock):
-        associate_lei_mock = mocker.patch("oauth2.oauth2_admin.OAuth2Admin.associate_to_lei_set")
+        associate_lei_mock = mocker.patch("oauth2.oauth2_admin.OAuth2Admin.associate_to_leis")
         associate_lei_mock.return_value = None
         client = TestClient(app_fixture)
-        data = ["testlei1", "testlei2"]
-        res = client.put("/v1/admin/me/institutions", json=data)
+        res = client.put("/v1/admin/me/institutions", json=["testlei1", "testlei2"])
         associate_lei_mock.assert_called_once_with("testuser123", {"testlei1", "testlei2"})
         assert res.status_code == 202