src/main/resources/cms/org.apache.sling.serviceusermapping.impl.ServiceUserMapperImpl.amended~sling-cms-ugc.json

{
  "user.mapping": [
    "org.apache.sling.cms.core:sling-cms-ugc=sling-cms-ugc",
    "org.apache.sling.cms.reference:sling-cms-ugc=sling-cms-ugc"
  ]
}