{"blocks": [{"key": "d56a64ff", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "3d93a3df", "text": "Design a GPU credits allocation system that tracks user GPU consumption, deducts credits in real-time, supports credit top-ups, rate limiting, and fair usage enforcement across multiple GPU nodes.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}