How to properly set link lifetime in REST Symfony?

Question

symfony

I'm trying to do it through FosREST and add links through willdurand/BazingaHateoasBundle . Initially, there is no "link lifetime" in the entity - this parameter does not apply to the entity in any way, it belongs only to the link. How to shove it into links?
2. In addition to the lifetime, the link contains a "Signature" - a hash based on the data of the link itself.
Can you please tell me how this is done correctly?