When making an SkyVault REST API call,
         your application might not know the user ID of the currently authenticated user. You can
         use the string -me- to represent that user in request URLs, and PUT and
         POST request bodies. 
   
      For example, assuming the currently authenticated user is fred.bloggs@yourcompany.com the following URL will return a list of site memberships for the currently authenticated user:
https://api.alfresco.com/yourcompany.com/public/alfresco/versions/1/people/fred.bloggs@yourcompany.com/sites
Using the current user -me-, the following URL will return the same list of site memberships:
https://api.alfresco.com/yourcompany.com/public/alfresco/versions/1/people/-me-/sites
