user www-data;

root@homeserver:/etc/nginx# ls -l /var/www/blog/wp-content/
total 16
-rwxrwxr-x 1 www-data root   28 Jul  4 20:24 index.php
drwxrwxr-x 7 www-data root 4096 Jul  8 10:45 plugins
drwxrwxr-x 6 www-data root 4096 Jul  4 20:30 themes
drwxrwxr-x 4 www-data root 4096 Jul  5 09:47 uploads