Abstract: The invention relates to a method for managing contracts for consumption type services which includes smoothing requests for enactment of UE contracts, by determining a time-to-live in respect of each UE contract, determining an estimate of the number of concurrent requests for contracts to occur at predetermined future time intervals, and modifying the actual issued time-to-live in respect of at least some of the enacted UE contracts to minimize network load. The method also extends to determining a trust-rating for at least some of the UE's contracted to a service provider for the consumption type service and modifying the trust-rating for such UE over time to more accurately reflect the actual trustworthiness of contract requests emanating from such UE.