private function _convertDeleteSubscription($request) {

        $parameters = array();
        $parameters['Action'] = 'DeleteSubscription';
        if ($request->isSetSellerId()) {
            $parameters['SellerId'] =  $request->getSellerId();
        }
        if ($request->isSetMWSAuthToken()) {
            $parameters['MWSAuthToken'] =  $request->getMWSAuthToken();
        }
        if ($request->isSetMarketplaceId()) {
            $parameters['MarketplaceId'] =  $request->getMarketplaceId();
        }
        if ($request->isSetNotificationType()) {
            $parameters['NotificationType'] =  $request->getNotificationType();
        }
        if ($request->isSetDestination()) {
            $DestinationDeleteSubscriptionInput = $request->getDestination();
            foreach  ($DestinationDeleteSubscriptionInput->getDeliveryChannel() as $DeliveryChannelDestinationIndex => $DeliveryChannelDestination) {
                $parameters['Destination' . '.' . 'DeliveryChannel' . '.'  . ($DeliveryChannelDestinationIndex + 1)] =  $DeliveryChannelDestination;
            }
        }

        return $parameters;
    }