Is your feature request related to a problem? Please describe.

Currently Openbao doesn't save the entity id only the subject options. Therefore there is need to save entity id when being recovered.

Describe the feature you are requesting, as well as the possible use case(s) for it.

The retrieval of entity id by their certs serial number and vice versa

Indicate the importance of this feature to you.

Must-have

Anything else?

No response