I'm creating a List workflow.  I'm trying to detect when a user is added to a people picker field. I'd like to store the users in a Dictionary but I can't seem to get the data out. Not knowing what the Dictionary contains pretty much keeps me from completing the task. 

I'm setting a dictionary variable to the contents of the people field.  I'm trying to iterate through just like I would with a REST query.  That I understand because I can do a web query first to look at the results.  This is different since it just has the items in it.

Maybe a better question is how do you get all the items in a dictionary if you don't know the contents?