URL: https://docs.unity3d.com/ScriptReference/../Manual/../ScriptReference/DataMode.Mixed.html
dataLayer-initialized', user: { user_unity_id: undefined, user_logged_in: 'no' }, environment: { environment_locale: 'en-us', environment_currency: undefined }});Uses this mode where a mix of authoring and runtime data is available.
In this mode, a mixture of authoring and runtime data is available. When exiting Play mode, Unity loses runtime data. However, it retains any authoring data.