The causes of action to impose a constructive trust and to recover damages for unjust enrichment are governed by a six-year statute of limitations that begins to run at the time of the wrongful act giving rise to a duty of restitution.
Saddharma Cakra Buddhist Assn., Inc. v. Sheng Chien Chen, NY Slip Op 00167 (2d Dep't January 8, 2020)
Here is the decision.