In my original post there is one space in the sig when I copied the text from myetherwallet and pasted it to this thread:
"0x7ff4a832ca9d1c49e304ae3c34841f0499908b9b62ec188e4d8b1512708c0f0e3af482924957d 24dc2470651658e5a9d12f6e963de3e1b3a43569d68af8c87bd1c"
The correct signature is this one, without the space:
{
"address": "0x62a717b2b56b6ab3ec5e823ec357706ca6586774",
"msg": "My account financial_analyst (
https://bitcointalk.org/index.php?action=profile;u=191069) has been hacked/lost. Please reset the email to xxx (my email before it was changed by the scammer). The current date is 04/12/2017.",
"sig": "0x7ff4a832ca9d1c49e304ae3c34841f0499908b9b62ec188e4d8b1512708c0f0e3af482924957d
24dc2470651658e5a9d12f6e963de3e1b3a43569d68af8c87bd1c",
"version": "2"
}
You may verify this message via this address:
https://www.myetherwallet.com/signmsg.html.
Sorry for this inconvenience.
Edit: it seems that the space is something that is generated in bitcointalk. Please remove it manually when you copy this message and you paste it to
https://www.myetherwallet.com/signmsg.html.