URL: https://docs.unity3d.com/ScriptReference/../Manual/../ScriptReference/EventType.Layout.html
ser: { user_unity_id: undefined, user_logged_in: 'no' }, environment: { environment_locale: 'en-us', environment_currency: undefined }});A layout event.
This event is sent prior to anything else - this is a chance to perform any initialization. It is used by the automatic layout system.