This is the .htaccess located on /wp-content/plugins/wp-minify/min/ :

<IfModule mod_rewrite.c>
RewriteEngine on
RewriteRule ^([a-z]=.*) index.php?$1 [L,NE]
</IfModule>

And I'm not able to figure out what should I put on my nginx configuration file, this is what I've got so far:

rewrite ^/wp-content/plugins/wp-minify/min/([a-z]=.*)$ /wp-content/plugins/wp-minify/min/index.php?

(I know it's incomplete)
Any ideas?
Thank you,
Regards.