Google Admob GDPR compliance – Unity

I have created a unity game that uses admob to show only rewarded video ads and there are no banner/interstitial ads in my game. Is it mandatory to take user consent (for EU countries) for showing the rewarded ads and if so how do I go about implementing it. I followed some online tutorials to implement admob ads but there was no mention of gdpr in any of those. Can someone please help?