Magento simple app/config.xml for webhooks

config.xml

<?xml version="1.0"?>
<config>
    <global>
        <webhook>
            <subscriptions>
                <mysubscriber_alias>
                    <name>My Sample Order Created Subscriber</name>
                    <endpoint_url>http://requestb.in/101o8wy1</endpoint_url>
                    <topics>
                        <customer>
                            <created/>
                            <updated/>
                            <deleted/>
                        </customer>
                        <order>
                            <created/>
                        </order>                                                                                                     1,1           Top
                    </topics>
                    <authentication>hmac</authentication>
                </mysubscriber_alias>
            </subscriptions>
        </webhook>
    </global>
</config>