Block_CommandBlock: {
    type: "compound";
    value: {
        auto: { type: "byte"; value: number };
        conditionalMode?: { type: "byte"; value: number };
        conditionMet: { type: "byte"; value: number };
        LPCommandMode: { type: "byte"; value: number };
        LPCondionalMode: { type: "byte"; value: number };
        LPRedstoneMode: { type: "byte"; value: number };
        powered: { type: "byte"; value: number };
    };
} & CommandBlock

Additional fields for [command block](https://minecraft.wiki/w/command block).