How to decrypt the response from Murmur server

We are checking mumble sharp and we were unable to read the response from Mumble server while creating new channel. Can you please guide us how to get the key from mumble server and decrypt the response which received from the server?

Since it's decrypted, we are unable to read the response.
 
Also let us know if there is option available in mumble sharp to edit the existing channel.
