Post UUX 4.4.0.94
tecton.actions.navigateTo('ssoDirect.ssoAccount', [{vendorId}, {hostAccountId}]);
Pre UUX 4.4.0.94
tecton.actions.openURL('mobilews/sso/generic/{vendorId}/{hostAccountId}', { requiresToken: true });
Pre UUX 4.4.0.81
tecton.actions.openURL('mobilews/sso/generic/{vendorId}/{hostAccountId}?q2token={q2Token}');
q2Token is the HQ Session ID, which can be retrieved with self.online_session.session_id