A confessed “Nigerian scammer” claimed to be responsible for the foiled plot to sell Graceland out from under the family of the late Elvis Presley, RadarOnline.com has learned. In a shocking turn of events, a person claiming to be based in the country with a Naussany-associated email address reached out to take credit for the scheme and revealed the King of Rock’s granddaughter, Riley Keough, outsmarted him when she who applied for an injunction to block the auction. A judge halted the sale after Keough’s filing following a foreclosure notice which expressed their plan to sell the property to …