2.2.1.32 PidTagLastModifierEntryId Property
Type: PtypBinary ([MS-OXCDATA] section 2.11.1)
The PidTagLastModifierEntryId property ([MS-OXPROPS] section 2.766) specifies the last user to modify the contents of the message according to their address book EntryID. The format of an address book EntryID data type is specified in [MS-OXCDATA] section 2.2.5.2.