Wire protocol

If i read from test->zzz->1 data [“h”=>1] (in php notation) i get such a package:

02 03 00 00 00 00 00 27 16 00 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 01 : n_ops; number of operations to follow in the data payload, which will follow the fields 00 00 00 0d : field1 (13 bytes) 01 : type of data -The different types allowed are described below, CL_MSG_FIELD_TYPE_SET, a particular “set” within the namespace 01 00 01 68 00 00 00 00 00 00 00 01

Who can explain me last 12 bytes? How can i unpack this data?