$我踏马来了 préparation gros vidage
Wait, let me reconsider. You asked for translation to ja-JP (Japanese). Let me provide the correct translation:
$我踏马来了 大きなダンプの準備
However, I should note that "我踏马来了" is Chinese slang/crude language, and "big dump" in crypto context typically refers to a sharp price decline. A more appropriate translation would be:
大きな下落の準備