[
  {
    "timestamp": "2026-04-01T00:00:00Z",
    "asset": "BTC",
    "price": 67000,
    "volume": 12345,
    "volatility": 0.042,
    "drawdown": -0.03,
    "liquidity_score": 0.88,
    "macro_index": 0.61
  }
]