5.16.2.1 Object(DS-DN)
A value with the Object(DS-DN) syntax is a UTF-8 string in the following format:
<GUID=guid_value>;<SID=sid_value>;dn
where:
guid_value is the value of the object's objectGUID attribute.
sid_value is the value of the object's objectSid attribute in its binary format (as specified in [MS-DTYP] section 2.4.2).
dn is the string representation of a DN (as specified by [RFC2252] section 6.9, and further specified by [RFC2253]).
For reference to objects that do not have an objectSid, the format is as follows:
<GUID=guid_value>;dn
where guid_value and dn have the same meaning as in the previous case.