public function updateAclItem($aclId, $aclItemId, $itemValue, $negated, $comment = '', $subnet = false)
    {
        $body = [
            'ip' => $itemValue,
            'negated' => $negated,
            'comment' => $comment
        ];

        if ($subnet) {
            $body['subnet'] = $subnet;
        }

        $url = $this->_getApiServiceUri(). 'acl/'. $aclId . '/entry/' . $aclItemId;
        $result = $this->_fetch($url, \Zend_Http_Client::PATCH, json_encode($body));

        return $result;
    }