<manifest>

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="com.google.android.gms.permission.AD_ID"/>
    
    <application>
    
    <!-- This is the Sample App ID-->
    <meta-data
        android:name="com.google.android.gms.ads.APPLICATION_ID"
        android:value="ca-app-pub-3940256099942544~3347511713"/>
        
    </application>
</manifest>

Only read the following step if your technical account manager didn’t already provide an Implementation type to follow, otherwise continue there.