The founder of a Singapore-based hedge fund has paid $58.5 million for a newly developed mansion in Bel-Air once connected to a $1.2-billion Ponzi scheme. Adam Levinson, managing partner and chief investment officer for Graticule Asset Management Asia, bought the 30,000 square-foot home at 642 St. Cloud Rd., Dirt.com reported. The seller was Woodbridge Liquidation Trust. He and his wife, Brittany Levinson, bought the nine-bedroom, 15-bath home in East Gate Bel-Air, marking the fourth biggest deal of the year in Los Angeles.