Retrieves the native token balance held by a specific address.
1 for Ethereum, 8453 for Base from our supported chains.account for this endpoint.balance for this endpoint.0xfefefefefefefefefefefefefefefefefefefefe. Up to 20 addresses can be queried, separated by commas.latest for the last block number of the chain. Also accepts a specific block number in hex format, like 0x10d4f up to the last 128 blocks. For historical balances, use the Historical Balance endpoint.