It is impossible to properly answer this question without reading the papers that you signed.
You should take the papers to a lawyer and have the lawyer review them.
If this answer was helpful, please mark it as helpful or as a best answer. This answer is for general education purposes only. It neither creates an attorney-client relationship nor provides legal guidance or advice. The answer is based on the limited information provided and the answer might be different had additional information been provided. You should consult an attorney.