I also have a question about signing message in the console of electrum.
I tried the function
signmessage()
which suggest 3 arguments have to be given. I wonder which 3?
I tried
signmessage(address, message), but return a false response.
I check documentation web of electrum.org, as well as google, without luck no information provided.

Could anyone show how to use signmessage() function in the console?