public function subscribeTo($package)
    {
        if (!$this->hasSubscription(false)) {
            $this->_mixer->subscription = $this->getService('repos:subscriptions.subscription')
            ->getEntity(array(
                'data' => array(
                    'package' => $package,
                  ),
            ));
            $this->_mixer->verified = 1;
        }

        return $this->_mixer->subscription;
    }