seems I am not the only one
but I think you do made something wrong in your signed message
the field should be the result which come from the calculating of the content you sign
in your case ,the content you sign is:

sign this with your bitcoin address 1bStQaRJaTFauPh8Q5CuTmsTbbWBqJaSE
you will get the signature,it should be something like this:



and remember the bitcoin address you signed,in you case is 1bStQaRJaTFauPh8Q5CuTmsTbbWBqJaSE,should be proved belongs to the account you want to recover,for example,this address has been posted in this forum by the account,or has been included in a PM which sent by the account,find these kind of link and attach them

so,in your case the whole pm should looks like this:

when you finished the sign,you can check it here https://brainwallet.github.io/#verify

sorry for my English I hope I make it clear

I post mine here,I have verified it,no problem,I don't know why I got no response so far
any advice will be appreciated