The secret management attributes.
Creation time in seconds since 1970-01-01T00:00:00Z.
Determines whether the object is enabled.
Expiry date in seconds since 1970-01-01T00:00:00Z.
Not before date in seconds since 1970-01-01T00:00:00Z.
Last updated time in seconds since 1970-01-01T00:00:00Z.