Please append the following script immediately after your ad creative iframe/javascript tag in your ad system:
<script data-adjs='true' data-client-id='<<account_id>>' type='text/javascript' src='//cdn.adjs.net/auth.digital.js'></script>
NOTE: <<account_id>>
is your Authenticated Digital account id. For example, the AD demo account ID is: f4bb22d31b2e2357f5375465ead279c90915fbe1