prima facie showing that personal jurisdiction ex- ists. PDK Labs, Inc. v. Friedlander, 103 F.8d 1105, 1108 @d Cir.1997); AZ. Trade Finance, Inc. v. Petra Bank, 989 F.2d 76, 79 (2d Cir.1993). Plaintiffs may rely en- tirely on factual allegations, Jazini v. Nis- san Motor Co. 148 F.3d 181, 184 (2d Cir. 1998),