关于授权和一号通域名的问题

【Java多商户版本】目前我们有一个主域名www.xxxx.com，两个子域名admin.xxxx.com，mer.xxxx.com

nginx配置

server {
	    listen       80;
	    server_name  www.xxxx.com;

        client_max_body_size 50m;

	    location /crmeb-front/ {
	        proxy_pass http://crmeb-front:8081/;
	    }

	    error_page   500 502 503 504  /50x.html;
	    location = /50x.html {
	        root   /usr/share/nginx/html;
	    }
	}

    server {
	    listen       80;
	    server_name  admin.xxxx.com;

        client_max_body_size 50m;

        location / {
            root   /usr/share/nginx/html/webPcAdmin;
            index  index.html index.htm;
            try_files $uri $uri/ /index.html;
        }

	    location /crmeb-admin/ {
	        proxy_pass http://crmeb-admin:8080/;
	    }

	    error_page   500 502 503 504  /50x.html;
	    location = /50x.html {
	        root   /usr/share/nginx/html;
	    }
	}

    server {
	    listen       80;
	    server_name  mer.xxxx.com;

        client_max_body_size 50m;

        location / {
            root   /usr/share/nginx/html/webPcMerAdmin;
            index  index.html index.htm;
            try_files $uri $uri/ /index.html;
	    }

	    location /crmeb-admin/ {
	        proxy_pass http://crmeb-admin:8080/;
	    }

	    error_page   500 502 503 504  /50x.html;
	    location = /50x.html {
	        root   /usr/share/nginx/html;
	    }
	}
}

文件上传域名和支付回调的域名都是配置的 http://admin.xxxx.com/crmeb-admin

申请授权和申请一号通时域名应该怎么填写