Token service ExpiresIn unit?

Hi all,

Playing around with the TokenResource.svc for obtaining a Bearer token, then passing that as the authentication header for future API requests.
All is working fine, but I’m unable to find documentation on what unit the ExpiresIn value is. Seems to me it’s in seconds, but I don’t want to assume anything.
Can anyone clue me in?

Thanks in advance.

Seconds

Thanks very much!