data is a single rate value (string/number).
For network in the path and buy/sell quotes, use Get Token Rate (v2) — GET /v2/rates/{network}/{token}/{amount}/{fiat}.Network identifier for the blockchain (optional, filters tokens by network)
ethereum, base, bnb-smart-chain, lisk, scroll, celo, arbitrum-one, polygon, asset-chain Provider ID to get the rate for a specific provider. If not provided, returns rate from the public queue.