curl --request GET \
  --url https://sandbox.x.architect.co/api/candles/last \
  --header 'Authorization: Bearer <token>'

{
  "candle": {
    "buy_volume": 123,
    "close": "<string>",
    "high": "<string>",
    "low": "<string>",
    "open": "<string>",
    "sell_volume": 123,
    "symbol": "<string>",
    "timestamp_ns": 1,
    "volume": 123
  }
}