The Nudge Tracking JS can be implemented as an Event Tag in DCM.
This is useful for deploying the tracking JS without the need to give the Publisher any extra code to place on their site, all they need is the normal DCM code.
1. Open the campaign you wish to add Nudge to and select Properties.
2. Scroll down to Event Tags and click Create New Impression tag.
3. Add a name to the impression event tag eg Nudge.
4. Select “Script” for the Tag Type and input your Nudge Tracking JS link in the Tag URL.
If you are unsure what your Tag URL is, please contact with using the helper in the bottom right.
a) If you are using the event tracker, and not the Nudge JS, please set the "Tag Type" to Image.
5. Click Save.
NOTE: Please ensure the Tag Type is set to Script. Nudge will not work if it’s fired through an iFrame or as an Image Tag.
For more information, please follow the steps outlined here https://support.google.com/dcm/answer/6136062?hl=en