<?php
$options = array(
    'joins' => array(
        "JOIN {$prefix}entities e2 ON (e.guid = e2.container_guid)",
    ),
    'wheres' => array(
        "e.type = 'group'",
        "e2.owner_guid = $user_guid",
    ),
    'order_by' => 'e2.time_updated DESC',
    'limit' => 10,
);