ParticipantId user = sessionManager.getLoggedInUser(session);
String address = (user != null) ? user.getAddress() : null;
// TODO(zdwang): Figure out a proper session id rather than generating a
// random number
String sessionId = (new RandomBase64Generator()).next(10);
return new JSONObject()
.put(SessionConstants.DOMAIN, domain)
.putOpt(SessionConstants.ADDRESS, address)
.putOpt(SessionConstants.ID_SEED, sessionId);