interface JsonMessage {
  parentHash: string,
  sha3Uncles: string,
  miner": string,
  stateRoot: string,
  transactionsRoot: string,
  receiptsRoot: string,
  logsBloom: string,
  difficulty: string,
  number: string,
  gasLimit: string,
  gasUsed: string,
  timestamp: string,
  extraData: string,
  mixHash: string,
  nonce: string,
  baseFeePerGas: string,
  withdrawalsRoot: null,
  blobGasUsed: null,
  excessDataGas: null,
  hash: string
}