Authenticate into HA with Long-lived access token and NGINX

Here I managed to setup Authentik + NginX Proxy Manager as Reverse Proxy Authentication. As Seen, the Authorization header is declared in the NPM custom configuration. I would like to get the value from Authentik Custom Headers declared for Users/Groups.

I would like to implement the same for HA. How can I use NginX to authentication with Home Assistant using a token to bypass login screen? According to this documentation it should work by declearing the tocken as Authorisation Header, but I am still unsuccessful.

    proxy_set_header Authorization "Bearer token";
    proxy_pass_header Authorization;

I know of Trusted Networks and Header Authentication I would like still to let NGINX Authenticate intto home assistant as an alternative approach to the previusly mentioned methodes.