diff --git a/src/bot_api/json_processor.py b/src/bot_api/json_processor.py
index e629258ecf..a0ea0ac159 100644
--- a/src/bot_api/json_processor.py
+++ b/src/bot_api/json_processor.py
@@ -16,12 +16,19 @@ class JSONProcessor:
                 continue
 
             name = String.convert_to_camel_case(parameter.name)
+            name = name.replace('Dto', 'DTO')
             name_first_lower = String.first_to_lower(name)
             if name in values or name_first_lower in values:
+                value = ''
                 if name in values:
-                    args.append(values[name])
+                    value = values[name]
                 else:
-                    args.append(values[name_first_lower])
+                    value = values[name_first_lower]
+
+                if isinstance(value, dict):
+                    value = JSONProcessor.process(parameter.annotation, value)
+
+                args.append(value)
 
             elif parameter.default != Parameter.empty:
                 args.append(parameter.default)
diff --git a/src/bot_api/model/update_auth_user_dto.py b/src/bot_api/model/update_auth_user_dto.py
index 682f0122b4..9caa94738c 100644
--- a/src/bot_api/model/update_auth_user_dto.py
+++ b/src/bot_api/model/update_auth_user_dto.py
@@ -10,14 +10,14 @@ class UpdateAuthUserDTO(DtoABC):
 
     def __init__(
             self,
-            auth_user: AuthUserDTO,
-            new_auth_user: AuthUserDTO,
+            auth_user_dto: AuthUserDTO,
+            new_auth_user_dto: AuthUserDTO,
             change_password=False
     ):
         DtoABC.__init__(self)
 
-        self._auth_user = auth_user
-        self._new_auth_user = new_auth_user
+        self._auth_user = auth_user_dto
+        self._new_auth_user = new_auth_user_dto
         self._change_password = change_password
 
     @property
diff --git a/src/bot_api/service/auth_service.py b/src/bot_api/service/auth_service.py
index 07e750284c..ede6f15f18 100644
--- a/src/bot_api/service/auth_service.py
+++ b/src/bot_api/service/auth_service.py
@@ -191,12 +191,12 @@ class AuthService(AuthServiceABC):
 
         # update first name
         if update_user_dto.new_auth_user.first_name is not None and update_user_dto.auth_user.first_name != update_user_dto.new_auth_user.first_name:
-            user.FirstName = update_user_dto.new_auth_user.first_name
+            user.first_name = update_user_dto.new_auth_user.first_name
 
         # update last name
         if update_user_dto.new_auth_user.last_name is not None and update_user_dto.new_auth_user.last_name != '' and \
                 update_user_dto.auth_user.last_name != update_user_dto.new_auth_user.last_name:
-            user.LastName = update_user_dto.new_auth_user.last_name
+            user.last_name = update_user_dto.new_auth_user.last_name
 
         # update E-Mail
         if update_user_dto.new_auth_user.email is not None and update_user_dto.new_auth_user.email != '' and update_user_dto.auth_user.email != update_user_dto.new_auth_user.email:
@@ -208,21 +208,22 @@ class AuthService(AuthServiceABC):
         is_existing_password_set = False
         is_new_password_set = False
         # hash passwords in DTOs
-        if update_user_dto.auth_user.Password is not None and update_user_dto.auth_user.Password != '':
+        if update_user_dto.auth_user.password is not None and update_user_dto.auth_user.password != '':
             is_existing_password_set = True
-            update_user_dto.auth_user.Password = self._hash_sha256(update_user_dto.auth_user.Password)
+            update_user_dto.auth_user.password = self._hash_sha256(update_user_dto.auth_user.password)
 
-        if update_user_dto.auth_user.Password != user.Password:
+        if update_user_dto.auth_user.password != user.password:
             raise ServiceException(ServiceErrorCode.InvalidUser, 'Wrong password')
 
-        if update_user_dto.new_auth_user.Password is not None and update_user_dto.new_auth_user.Password != '':
+        if update_user_dto.new_auth_user.password is not None and update_user_dto.new_auth_user.password != '':
             is_new_password_set = True
-            update_user_dto.new_auth_user.Password = self._hash_sha256(update_user_dto.new_auth_user.Password)
+            update_user_dto.new_auth_user.password = self._hash_sha256(update_user_dto.new_auth_user.password)
 
         # update password
-        if is_existing_password_set and is_new_password_set and update_user_dto.auth_user.Password != update_user_dto.new_auth_user.Password:
-            user.Password = update_user_dto.new_auth_user.Password
+        if is_existing_password_set and is_new_password_set and update_user_dto.auth_user.password != update_user_dto.new_auth_user.password:
+            user.password = update_user_dto.new_auth_user.password
 
+        self._auth_users.update_auth_user(user)
         self._db.save_changes()
 
     async def update_user_as_admin_async(self, update_user_dto: UpdateAuthUserDTO):
@@ -242,31 +243,31 @@ class AuthService(AuthServiceABC):
         if user is None:
             raise ServiceException(ServiceErrorCode.InvalidUser, 'User not found')
 
-        if user.ConfirmationId is not None and update_user_dto.new_auth_user.is_confirmed:
-            user.ConfirmationId = None
-        elif user.ConfirmationId is None and not update_user_dto.new_auth_user.is_confirmed:
+        if user.confirmation_id is not None and update_user_dto.new_auth_user.is_confirmed:
+            user.confirmation_id = None
+        elif user.confirmation_id is None and not update_user_dto.new_auth_user.is_confirmed:
             user.confirmation_id = uuid.uuid4()
         # else
         #     raise ServiceException(ServiceErrorCode.InvalidUser, 'E-Mail not confirmed')
 
         # update first name
         if update_user_dto.new_auth_user.first_name is not None and update_user_dto.auth_user.first_name != update_user_dto.new_auth_user.first_name:
-            user.FirstName = update_user_dto.new_auth_user.first_name
+            user.first_name = update_user_dto.new_auth_user.first_name
 
         # update last name
         if update_user_dto.new_auth_user.last_name is not None and update_user_dto.new_auth_user.last_name != '' and update_user_dto.auth_user.last_name != update_user_dto.new_auth_user.last_name:
-            user.LastName = update_user_dto.new_auth_user.last_name
+            user.last_name = update_user_dto.new_auth_user.last_name
 
         # update E-Mail
         if update_user_dto.new_auth_user.email is not None and update_user_dto.new_auth_user.email != '' and update_user_dto.auth_user.email != update_user_dto.new_auth_user.email:
             user_by_new_e_mail = self._auth_users.find_auth_user_by_email(update_user_dto.new_auth_user.email)
             if user_by_new_e_mail is not None:
                 raise ServiceException(ServiceErrorCode.InvalidUser, 'User already exists')
-            user.EMail = update_user_dto.new_auth_user.email
+            user.email = update_user_dto.new_auth_user.email
 
         # update password
         if update_user_dto.change_password and update_user_dto.auth_user.password != update_user_dto.new_auth_user.password:
-            user.Password = self._hash_sha256(update_user_dto.new_auth_user.password)
+            user.password = self._hash_sha256(update_user_dto.new_auth_user.password)
 
         # update role
         if user.auth_role == update_user_dto.auth_user.auth_role and user.auth_role != update_user_dto.new_auth_user.auth_role: