A Marketo Munchkin tag lets you collect data from your site and send it to Marketo.
To set it up, follow these steps:
1. Log in to Marketo Munchkin.
2. Go to Admin > Munchkin.
3. Click Asynchronous for Tracking Code Type.
4. Copy your acccount ID.

5. Log in to Piwik PRO.
6. Go to Menu > Tag Manager.
7. Navigate to Tags.
8. Click Add a tag.
9. Name your tag and select the following type: Marketo Munchkin JavaScript.
10. Click Next.
11. Paste your Marketo account ID.

12. In Advanced tag settings, choose Consent type. Set it up if you use a consent form on your site. This tag will only fire for visitors who accept the selected consent type.
13. Respect opt-out and DNT is turned on by default. Leave it as is if you want to respect visitors who’ve turned on the Do-Not-Track feature in their browsers or who’ve opted out of tracking using our opt-out form.
14. In Flight dates, set the date and time when the tag will fire.
15. In Tag triggers, click Add a trigger or Choose existing trigger to set up a trigger for your tag.
16. Click Save.
17. Test your tag in debug mode.
18. When you’re happy with how the tag works, click Publish.
19. Done!