Iterate PSObject hashtable in C#

Question

One of the properties (identity) in my PSObject object is a hashtable like this which is returned from PowerShell:

@{name=something; Number=87354}

This is what I'm trying to do:

foreach (PSObject ticket in tickets)
{
      var a = ticket.Properties["identity"].Value;
      System.Diagnostics.Debug.WriteLine(a.name); //error
}

How can I access the properties inside of the hashtable?