code: async function showUserInfo(_user) {
    console.log(`
  ********************    User Information    *********************
  - Address:              ${_user}
  - POLY balance:         ${web3.utils.fromWei(await polyToken.methods.balanceOf(_user).call())}
  - ETH balance:          ${web3.utils.fromWei(await web3.eth.getBalance(_user))}
    `);
  }
docs: Helpers