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•  contract Echoer *
•    - function echo(bytes calldata _data)

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/**
 *Submitted for verification at Etherscan.io on 2020-11-30
*/

// SPDX-License-Identifier: MIT

pragma solidity ^0.6.0;

contract Echoer {
  event Echo(address indexed who, bytes data);

  function echo(bytes calldata _data) external {
    emit Echo(msg.sender, _data);
  }
}

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[{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"who","type":"address"},{"indexed":false,"internalType":"bytes","name":"data","type":"bytes"}],"name":"Echo","type":"event"},{"inputs":[{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"echo","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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ipfs://7a7766c661707f80ec8a614d4b74a355211ef3f24c9c9fbcaf21c596f951e8ff