OID value: 1.2.840.113549.1.9.2
OID description:
The unstructuredName attribute type specifies the name or names of a subject as an unstructured ASCII string. The interpretation of unstructured names is intended to be
specified by certificate issuers etc.; no particular interpretation is required.
An unstructured-name attribute can have multiple attribute values. When comparing two unstructured names, case is irrelevant.
URL for further info: http://www.rsalabs.com/pkcs/pkcs-9/index.html
See also the OID Repository website reference for 1.2.840.113549.1.9.2