The usual means of this kind of fraud is to impersonate various units to induce you to "register personal information" and "sign a contract" in the name of winning prizes, loans, and handling cards. And then lie to you. If you refuse, the swindler will tell you that you have been prosecuted (pretending to be a court) on trumped-up charges such as suspected breach of contract, falsely claiming to send you a subpoena, and even take coercive measures to scare you into paying the so-called liquidated damages, termination fees, settlement fees, etc.