How to converte this apache rewrite?

Server NGINX
1

Hi,

How would I convert this

RewriteEngine on
RewriteRule /Microsoft-Server-ActiveSync(.*)
/path/to/your/tine20_installation/index.php$1
[E=REDIRECT_ACTIVESYNC:true,E=REMOTE_USER:%{HTTP:Authorization}]

To a nginx server definition?

Thanks for any hints.

Sincerely, Joh