The following returns MultiSurface (CurvePolygon (CircularString (0 0, 10 0, 10 10, 0 10, 0 0)))
SELECT NEW ST_MultiSurface(0x010c00000001000000010a000000010000000108000000050000000000000000000000000000000000000000000000000024400000000000000000000000000000244000000000000024400000000000000000000000000000244000000000000000000000000000000000)