The value of tmnxCpmCardConfigUserLastModified indicates the last
user who modified the configuration.
If the configuration was last modified by an SNMPv1 or SNMPv2
set operation, the value of this object will indicate the SNMP
community string and view name separated by the '/' character.
If the configuration was last modified by an SNMPv3 set operation,
the value of this object will be the SNMPv3 user and view name
separated by the '/' character.
If the configuration has not been saved since the last boot, the
object will have the value of an empty string.