Entity_EnderCrystal: {
    type: "compound";
    value: {
        BlockTargetX?: { type: "int"; value: number };
        BlockTargetY?: { type: "int"; value: number };
        BlockTargetZ?: { type: "int"; value: number };
    };
} & ActorPrefix & Component_Explode

Additional fields for [ender crystal](https://minecraft.wiki/w/ender crystal).