title: Metaplex sign command metadata parameter
body: <p>After creating an NFT via candy machine v2 I'm trying to execute a <code>sign</code> command <a href="https://docs.metaplex.com/candy-machine-v2/sign-nfts" rel="nofollow noreferrer">(link to the docs)</a></p>
  <p>This is the command from the documentation:</p>
  <pre><code>ts-node ~/metaplex/js/packages/cli/src/candy-machine-v2-cli.ts sign \
      -e devnet \
      -k ~/.config/solana/devnet.json \
      -c example
  </code></pre>
  <p><a href="https://github.com/metaplex-foundation/metaplex/blob/master/js/packages/cli/src/candy-machine-v2-cli.ts#L1022" rel="nofollow noreferrer">Looking at the code</a> it seems that the docs do not match the implementation.</p>
  <p>It requires an <code>-m/--metadata</code> parameter and I'm not sure what it is.<br />
  Tried to plug in a bunch of different values, but I get
  <code>Transaction failed: Incorrect account owner</code> or in one case <code>Transaction failed: This metadata does not have creators</code></p>
  <p>What should I put as the parameter? Seems to me that it must be a public key/address of some sort, but I'm unsure.</p>
  <p>Thank you!</p>