title: Token generation in REST API WCS
body: <p>How the WCToken can be generated without 
  invoking either the login/guest services in REST API?</p>
  
  <p>We can use the WCToken generated form either login/guest and calling various other webservices to retrieve data, how can we call other services without calling login/guest?</p>
  
  <p>I have found from my observation like, WCToken is generated based on the userId along with 2 more tokens(activitytokenid, activitytokenSignature).
  Is this WCToken stored in any database tables?</p>