You need to take this subpoena to an attorney
to discuss your situation asap. Good luck!
THIS ANSWER IS PURELY FOR ACADEMIC DISCUSSION ONLY AND DOES NOT CONSTITUTE ANY TYPE OF LEGAL ADVICE OR LEGAL REPRESENTATION.
It sounds as if the subpoena relates to a creditors examination for a judgment rendered against you. As previously mentioned, I'd consult with an attorney asap. The subpoena does not allow the creditor to "take" anything but requires you to appear, produce the specified documents and/or comply with the other conditions listed on the subpoena. A subpoena can be challenged (quashed) if the appropriate motion is brought before the judge. Good luck.