I brought an involuntary bankruptcy action against a criminal enterprise on behalf of myself and several clients. The bankruptcy estate recovered significant funds. One of the clients turned out to be involved in an unrelated criminal enterprise of his own in another state. That client owed me a commission on any funds recovered in the first action. A Receiver was appointed to recover assets of the client and recovered the funds distributed by my bankruptcy action. The Receiver took over my contract with the client, and recovered $1 million dollars but now refuses to pay me the contractual commission. I want to file a claim against him/the Receivership but am not sure how to do it.