KeepRandomBeacon.sol

/**
 * @dev Creates a request to generate a new relay entry, which will include a
 * random number (by signing the previous entry's random number).
 * @param blockReward The value in KEEP for generating the signature.
 * @param seed Initial seed random value from the client. It should be a cryptographically generated random value.
 * @param callbackContract Callback contract address.
 * @param callbackMethod Callback contract method signature.
 * @return An uint256 representing uniquely generated ID. It is also returned as part of the event.
*/
function requestRelayEntry(
        uint256 blockReward,
        uint256 seed,
        address callbackContract,
        string callbackMethod
) public payable returns (uint256 requestID) {
    // ...        
    return requestID;
}