-----BEGIN BITCOIN SIGNED MESSAGE-----
Looking to loan 0.15 BTC, my repayment 0.20 BTC in 14 days otherwise you own my account. 14th november 2015
-----BEGIN SIGNATURE-----
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IIit4lSAw+MAG93IfKEBkfoF3vj9rM1bL5pAmSZY7vGVSfqhoUYXC/hbORv7pOTg2fQi6PVa2dC+2y7McvY0k4g=
-----END BITCOIN SIGNED MESSAGE-----
Where did you post that address before? I can't find it. if you didn't post it several months ago then that signed message is useless.