// Destination contract address
const destination = "0x2c503cfba7178eb0ac2dc5df45279527d437657a";
// Generate entropy
const entropy = _STD_.random.generateSecureRandomHex();
// Fulfill entropy
_STD_.chains.ethereum.fulfill(
    "https://rpc.ankr.com/eth_goerli",  // RPC
    destination,                        // Destination contract address
    entropy,                            // Payload
    // Transaction parameters
    {
        methodSignature: "receive_entropy(bytes)",
        gasLimit: "9000000",
        maxFeePerGas: "255000000000",
        maxPriorityFeePerGas: "2550000000",
    },
    // Success callback
    (opHash) => {
        print("Succeeded: " + opHash)
    },
    // Error callback
    (err) => {
        print("Failed: " + err)
    },
);