emblemObjectiveHash property
If the item is an emblem that has a special Objective attached to it - for instance, if the emblem tracks PVP Kills, or what-have-you. This is a bit different from, for example, the Vanguard Kill Tracker mod, which pipes data into the "art channel". When I get some time, I would like to standardize these so you can get at the values they expose without having to care about what they're being used for and how they are wired up, but for now here's the raw data.
Implementation
@JsonKey(name:'emblemObjectiveHash')
int? emblemObjectiveHash;