Hi @reddyishanvi
Below one workes. Make sure that the spaces and characters are replaced with encoded format
<?xml version="1.0" encoding="UTF-8"?>
<jcr:root xmlns:sling="http://sling.apache.org/jcr/sling/1.0" xmlns:jcr="http://www.jcp.org/jcr/1.0"
jcr:primaryType="sling:OsgiConfig"
scripts="[set ACL for content-writer-service
 allow jcr:read\,rep:write\,jcr:versionManagement\, jcr:modifyAccessControl\,jcr:readAccessControl\,jcr:lockManagement on /var
 end, set ACL for content-writer-service
 allow jcr:read\ on /
 end, set ACL for content-writer-service
 allow jcr:read\,rep:write\,jcr:versionManagement\, jcr:modifyAccessControl\,jcr:readAccessControl\,jcr:lockManagement on /etc
 end, set ACL for content-writer-service
 allow jcr:read\,rep:write\,jcr:versionManagement\, jcr:modifyAccessControl\,jcr:readAccessControl\,jcr:lockManagement on /content
 end, set ACL for content-reader-service
 allow jcr:read\ on /content
 end, set ACL for content-reader-service
 allow jcr:read\ on /etc
 end]"/>