Fix Message Authorization Example

[andorsk]

Remove record Id
Timestamp missing
No messages
https://identity.foundation/decentralized-web-node/spec/#message-authorization

{  // Request Object
  "messages": [  // Message Objects
      "recordId": "b65b7r8n7bewv5w6eb7r8n7t78yj7hbevsv567n8r77bv65b7e6vwvd67b6",
      "descriptor": {
        "interface": "Records",
        "method": "Write",
        "schema": "https://schema.org/SocialMediaPosting",
        "dataCid": CID(data),
        "dateCreated": 123456789,
        "dataFormat": "application/json"
      },
      "attestation": {
        "payload": "89f5hw458fhw958fq094j9jdq0943j58jfq09j49j40f5qj30jf",
        "signatures": [{
          "protected": "4d093qj5h3f9j204fq8h5398hf9j24f5q9h83402048h453q",
          "signature": "49jq984h97qh3a49j98cq5h38j09jq9853h409jjq09h5q9j4"
        }]
      },
      "authorization": {
        "payload": "bafybeigdyrzt5sfp7udm7hu76uh7y26nf3efuylqabf3oclgtqy55fbzdi",
        "signatures": [{
          "protected": "f454w56e57r68jrhe56gw45gw35w65w4f5i54c85j84wh5jj8h5",
          "signature": "5678nr67e56g45wf546786n9t78r67e45657bern797t8r6e5"
        }]
      }
    },
    {...}
  ]
}```

[Vikrant-Khedkar]

Interested to work in this