function updateBillingInfo()
{
    header('Content-Type: application/json');
    validateParameters($_POST);
    $customerId = getCustomerId();
    $billingAddrParams = $_POST['billing_address'];
    try {
        $result = ChargeBee_Customer::updateBillingInfo($customerId, array("billing_address" => $billingAddrParams));
        $jsonResponse = array("forward" => "/ssp-php/subscription");
        print json_encode($jsonResponse, true);
    } catch (ChargeBee_InvalidRequestException $e) {
        handleInvalidRequestErrors($e);
    } catch (Exception $e) {
        handleGeneralErrors($e);
    }
}