I have a tool that imports content and saves it with userId -1 (importer tool user). When importing with this tool, there should be no content validation.

I also have a subscription to the ContentSaving event:

   ContentService.Saving += OnSaving;

and:

  private void OnSaving(IContentService sender, ContentSavingEventArgs e)
    {
        foreach (var node in e.SavedEntities)
        {
                if (node.WriterId != -1)
                {
                    Validate(node, e);
                }
        }
    }

Which all works fine when importing, the WriterId is -1 and the validation doesn't occur, so the content is saved.

Now when a I log in and and save that data (different userId), this event is hit again. I want the validation to occur. This time the expected behaviour is because the user isn't -1 then the Validate() function should be called.

However I'm finding that the id is still -1 for the WriterId, so the Validate() function doesn't fire. This saves the user, then updates the WriterId to my userId, so when I save again this time the validation fires.

Assuming this is because it's checking the current state and getting the writerId rather than getting the userId from user saving?

So TLDR:

How do I get the correct userId of the user performing the save action in the Content.Saving event?