> We are literally sending a request to our government's server to sign

You've already lost. You're at the government's mercy. They can simply refuse to sign.

"Mr. John Smith, we noticed you've published some poorly-worded comments online. Why are you locked out of your account, you say? Oh, that's just an unfortunate technical issue with our signing system, happens all the time. Anyway, this is a friendly reminder for you to improve your online etiquette. Have a nice day."