Sample handler:
```go
    handler :=  func(ctx context.Context, payload []byte, in <-chan []byte, out chan<- []byte) *RemoteErr {
        fmt.Println("Got request with initial payload", p, "from", GetCaller(ctx context.Context))
        fmt.Println("Subroute:", GetSubroute(ctx))
        for {
            select {
            case <-ctx.Done():
                return nil
            case req, ok := <-in:

listen for event notifications using the [`event` sub-command](https://min.io/docs/minio/linux/reference/minio-mc/mc-event-add.html). MinIO SDK's [`BucketNotification` APIs](https://min.io/docs/minio/linux/developers/go/API.html#setbucketnotification-ctx-context-context-bucketname-string-config-notification-configuration-error) can also be used. The notification message MinIO sends to publish an event is a JSON message with the following [structure](https://docs.aws.amazon.com/AmazonS3/latest/dev/n...