Nginx conf to customize log format and include request-body with no escape

nginx.conf

events {
  worker_connections 768;
}

http {
  # Nginx will handle gzip compression of responses from the app server
  gzip on;
  gzip_proxied any;
  gzip_types text/plain application/json;
  gzip_min_length 1000;
  server_tokens off;
  #Define the custom log format we want 
  log_format custom escape=none '$remote_addr - $remote_user [$time_local] '
                           '"$request" $status $body_bytes_sent '
                           '"$http_referer" "$http_user_agent" "$gzip_ratio" --- '
                           '"$request_body"';
  server {
    access_log  /var/log/nginx/access.log custom;

   location /route1/ {
    proxy_pass https://domain1.com/;
    }

   location /api/ {
    proxy_pass https://domain2.com/;
    }
    
      
    location  =/ {

      if ($request_method !~ ^(GET|POST|HEAD|OPTIONS|PUT|DELETE|PATCH)$) {
        return 405;
      }

      if ($request_method = 'OPTIONS') {
          add_header 'Access-Control-Allow-Origin' $http_origin always;
          add_header 'Access-Control-Allow-Credentials' 'true';
          add_header 'Access-Control-Allow-Headers' 'Authorization,Accept,Origin,DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range';
          add_header 'Access-Control-Allow-Methods' 'GET,POST,HEAD,OPTIONS,PUT,DELETE,PATCH';
          add_header 'Access-Control-Max-Age' 1728000;
          add_header 'Content-Type' 'text/plain charset=UTF-8';
          add_header 'Content-Length' 0;
          return 204;
      }

      proxy_set_header Host dev.digitalmxce.com;
      proxy_set_header X-Real-IP $remote_addr;
      proxy_bind $server_addr;
      proxy_pass https://cooldomain.com;
    }
    
    location / {
       # handle everything else
       return 403;

    }
    
    
  }
}