An asset ID such as:
BTC, ETH (on their native chains),
USDC (on the Ethereum chain),
USDT_ERC20 (USDT on the Ethereum chain), TRX_USDT_S2UZ (USDT on
the Tron chain) for cryptocurrency, or USD, AUD, GBP, EUR for fiat currency.

Amount to withdraw.

Additional remarks regarding the withdrawal.

If cryptocurrency, the ID of the wallet (not the wallet address) where the crypto will be received. If fiat currency, The ID of the bank account where the fiat will be received.

The account from which funds will be taken, such as [trading, custody]; If fiat currency, only supports [trading] account.

Your API key, sent in the api-key request header.

Lowercase hex-encoded HMAC-SHA256 of the timestamp header value, using your API secret as the key: hex(HMAC_SHA256(api_secret, timestamp)). Only the timestamp is signed; the request path and body are not part of the signature. An invalid signature returns HTTP 401.

A Unix timestamp in seconds, sent with every request and used as the signed message. Your timestamp must be within 30 seconds of the API server time, otherwise the request is considered expired and rejected with HTTP 408. We recommend using the Get Time endpoint to query the API server time if you believe there is a time difference between your server and the API servers.