How can I create the sleep payload in the following payload with ysoserial?

hello. thanks for great project. I need help very urgently. I found a request for cve-2017-9805 where the base64 encoded field puts the server to sleep for like 10 seconds.
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I want to create the same payload in the request above, but I don't know how to create it with ysoserial. Can you please write the command that I can do this with ysoserial?
frohoff / ysoserial

How can I create the sleep payload in the following payload with ysoserial? #209
