サブスクリプション権限のクローズ

import { address, createClient } from '@solana/kit';
import { solanaLocalRpc } from '@solana/kit-plugin-rpc';
import { signer } from '@solana/kit-plugin-signer';
import {
  findSubscriptionAuthorityPda,
  subscriptionsProgram,
} from '@solana/subscriptions';

const client = createClient()
  .use(signer(userSigner))
  .use(solanaLocalRpc({ rpcUrl: 'http://127.0.0.1:8899' }))
  .use(subscriptionsProgram());

const tokenMint = address('TOKEN_MINT_ADDRESS_HERE');
const [subscriptionAuthorityPda] = await findSubscriptionAuthorityPda({
  user: userSigner.address,
  tokenMint,
});

await client.subscriptions.instructions
  .closeSubscriptionAuthority({
    user: userSigner,
    tokenMint,
    // Include this only when a sponsor funded the Subscription Authority.
    receiver: sponsorSigner.address,
  })
  .sendTransaction();