access/error logs and pid files as non-root

Hello Everyone,

I am trying to configure ngnix where logs and pid file are written to a custom path and owned as non root. When even I start ngnix these files are created and owned as root. In ngnix.conf I defined as below. Please advise.

user usradmin mwgroup;
worker_processes 1;

error_log /export/local/opt/ngnix/logs/error.log warn;
pid /export/local/opt/ngnix/logs/nginx.pid;


events {
worker_connections 1024;
}


http {
include /etc/nginx/mime.types;
default_type application/octet-stream;

log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';

access_log /export/local/opt/ngnix/logs/access.log main;

sendfile on;
#tcp_nopush on;

keepalive_timeout 65;

#gzip on;

include /etc/nginx/conf.d/*.conf;
}