if (isset($activity['to']) == true) {
            if (is_array($activity['to']) && in_array('https://www.w3.org/ns/activitystreams#Public', $activity['to'])) {
                $scope = 'public';
            }
            if (is_string($activity['to']) && $activity['to'] == 'https://www.w3.org/ns/activitystreams#Public') {