curl --request GET \
  --url https://drb.coinbase.com/api/v2/private/cancel_block_rfq \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "private/cancel_block_rfq",
  "params": {
    "block_rfq_id": 366
  }
}
'

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": {
    "amount": 100000,
    "asks": [],
    "bids": [],
    "block_rfq_id": 366,
    "combo_id": "BTC-FS-1NOV24_PERP",
    "creation_timestamp": 1729855159611,
    "expiration_timestamp": 1729855459611,
    "label": "example",
    "legs": [
      {
        "direction": "sell",
        "instrument_name": "BTC-1NOV24",
        "ratio": 1
      },
      {
        "direction": "buy",
        "instrument_name": "BTC-PERPETUAL",
        "ratio": 1
      }
    ],
    "makers": [],
    "role": "taker",
    "state": "cancelled"
  }
}