natsConnection *conn = NULL;
natsSubscription *sub = NULL;
s = natsConnection_ConnectTo(&conn, NATS_DEFAULT_URL);
s = natsConnection_SubscribeSync(&sub, conn, "updates");
s = natsSubscription_Unsubscribe(sub);
// Destroy objects that were created
natsSubscription_Destroy(sub);
natsConnection_Destroy(conn);