ModerationTokenViewHelper 

Returns the moderationToken for the activation link of an event. The actions confirmActivation and activate of the Management plugin are allowed with a valid moderationToken or for backend administrators only.

Use this ViewHelper in templates without a controller, which could assign the token, e.g. the mail template of the EmailToReceiver finisher of EXT:form. It returns an empty string, if the event does not exist.

<f:variable name="moderationToken">{e2:moderationToken(event: event)}</f:variable>

<f:link.action pageUid="{pidOfManagementPage}"
               action="confirmActivation"
               controller="Management"
               extensionName="Events2"
               pluginName="Management"
               absolute="1"
               arguments="{event: event, moderationToken: moderationToken}">
    Datensatz freischalten
</f:link.action>