strings.xml

<resources>
    <string name="app_name">My Trusted Web Activity</string>
    <string name="asset_statements">
        [{
            \"relation\": [\"delegate_permission/common.handle_all_urls\"],
            \"target\": {
                \"namespace\": \"web\",
                \"site\": \"https://my-twa.com\"}
        }]
    </string>
</resources>