var mask pubsub.Mask
	for _, s := range values[peerRESTListenEvents] {
		eventName, err := event.ParseName(s)
		if err != nil {
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}
		mask.MergeMaskable(eventName)
		eventNames = append(eventNames, eventName)
	}

	if bucketName != "" {
		if _, err := objAPI.GetBucketInfo(ctx, bucketName, BucketOptions{}); err != nil {

	var eventNames []event.Name
	var mask pubsub.Mask
	for _, ev := range values[peerRESTListenEvents] {
		eventName, err := event.ParseName(ev)
		if err != nil {
			return grid.NewRemoteErr(err)
		}
		mask.MergeMaskable(eventName)
		eventNames = append(eventNames, eventName)
	}

	rulesMap := event.NewRulesMap(eventNames, pattern, event.TargetID{ID: mustGetUUID()})