What is the test for knowing participation in a criminal conspiracy?

had some knowledge of the conspiracy coupled with either specific evidence the defendant occupied a trusted role in the conspiracy or other circumstantial evidence bearing on the defendant's knowledge of the nature of the object of the conspiracy. This is meant to distinguish proof of knowing participation in a criminal conspiracy from cases in which the evidence shows only that the defendant played a role subordinate to that of the principal engaged in the criminal conduct charged, and the defendant plausibly could have fulfilled that role without knowing the scheme's criminal nature. See United States v. Davis, 690 F.3d 127, 131 (2d Cir.2012).