import * as web3 from "@solana/web3.js";

const connection = new web3.Connection(web3.clusterApiUrl("devnet"));

async function main(){
    const key: Uint8Array = Uint8Array.from([PRIVATE KEY del que paga]);
    const signer = web3.Keypair.fromSecretKey(key);
    let programId: web3.PublicKey = new web3.PublicKey("Tu ProgramId");

    let transaction = new web3.Transaction();

    transaction.add (
        new web3.TransactionInstruction({
            keys: [],
            programId,
            data: Buffer.alloc(0)
        })
    )

    await web3
        .sendAndConfirmTransaction(connection, transaction, [signer])
        .then((sig)=> {
            console.log("sig: {}", sig);
        });

}

main();