This JSON message within a DCN request removes a user subscription from an EIS defined cache partition.
dcn_request= {"pkg":"pkgName","messages":[{"id":"1","op":":removeSubscription(s)",
"partition":"partitionName","username":"userName"}]}
{"pkg":"partitiontest","messages":[{"id":"1","op":":removeSubscription",
"partition":"partition1","username":"user1"}]}
{"pkg":"partitiontest","messages":[{"id":"1","op":":removeSubscriptions",
"username":"user1"}]}