chore: ensure signer nodes use random public keys

[itegulov]

Trying to debug why dev deployment seems to be using the same key for all accounts. Seems to be working in the integration tests, but extra logs should help me see what the problem is.

[volovyks]

@itegulov @miraclx random valid tokens open up a security vulnerability. We will need to get rid this logic.
Before it, the raleyaer was filtering such requests. Now it will accept them, since the token is new.