interface JsonMessage {
 calls: Array<
    {
      from: string,
      gas: string,
      gasUsed: string,
      input: string,
      output: string,
      to: string,
      type: string
    }
  >,
  from: string,
  gas: string,
  gasUsed: string,
  input: string,
  to: string,
  type: string,
  value: string,
  txHash: string
}