Returns a base fee per gas and an effective estimate of the priority fee, using the gas history for the requested block range, if available.
{blockCount} and {newestBlock} are required parameters.
Result Fields
{oldestBlock} - Oldest block fetched, in hex. {baseFeePerGas} - Array of block base fees per gas. {gasUsedRatio} - Array of gas used ratios. {reward} - Array of effective priority fees per gas data points from a single block.