https://gist.github.com/anxiubin/f57c806d2988e5d195cc182497593816
https://gist.github.com/anxiubin/e133245ea4e904b871eb968556fbf674
// Klaytn IDE uses solidity 0.4.24, 0.5.6 versions.
pragma solidity >=0.4.24 <=0.5.6;
contract IKIP17Receiver {
function onKIP17Received(
address operator,
address from,
uint256 tokenId,
bytes memory data