TaskEmitter.sol

// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.0;

contract TaskEmitter {
    event LogTaskSubmitted(address indexed service, bytes task);

    modifier isListed {
        // Make some call to Gelato governance whitelist and check if service
        // trying to submit a Task is whitelisted.
        _;
    }

    function submitTask(bytes calldata _task) external isListed {
        emit LogTaskSubmitted(msg.sender, _task);
    }
}