By "Digital Data", I assume that you're referring to digitalData, a data layer that has traditionally been used with Adobe Analytics tracking.
If so, then digitalData doesn't really send data to AA. Rather, it's an intermediate (JavaScript) object between your website and the Adobe Analytics tracking code, AppMeasurement.js. Data are set in digitalData by the website and read by the implementation of AA's tracking code.
You'll need to speak with whoever implemented AA for you to figure out the best way to set a user's logged in state in digitalData, such that it can be tracked to AA. That is a custom implementation specific to your website.