Update an attachment field

{
  "entry": {
    "slug": "AbCdEfGh",
    "link": "https://api.au.cr4ce.com/entry/AbCdEfGh",
    "title": "Project title"
  },
  "attachment_fields": [
    {
      "slug": "IjKlMnOp",
      "link": "https://api.au.cr4ce.com/field/IjKlMnOp",
      "label": {
        "en_GB": "Type of attachment"
      },
      "title": {
        "en_GB": "Type of attachment"
      },
      "value": "Photo",
      "translated": {
        "en_GB": "Photo"
      }
    },
    {
      "slug": "QrStUvWx",
      "link": "https://api.au.cr4ce.com/field/QrStUvWx",
      "label": {
        "en_GB": "<p>URL</p>"
      },
      "title": {
        "en_GB": "URL"
      },
      "value": "https://example.com/image.svg",
      "translated": {
        "en_GB": "https://example.com/image.svg"
      }
    }
  ],
  "created": "2025-04-27T01:00:00Z",
  "file": {
    "token": "AbCdEfGhIjKlMnOp",
    "link": "https://api.au.cr4ce.com/file/AbCdEfGhIjKlMnOp",
    "download": "https://files.au.cr4ce.com/file/AbCdEfGhIjKlMnOp/example.pdf?Expires=1781485359&Signature=REDACTED&Key-Pair-Id=REDACTED",
    "filename": "example.pdf"
  },
  "order": 1,
  "tab": {
    "slug": "YzAbCdEf",
    "link": "https://api.au.cr4ce.com/tab/YzAbCdEf",
    "name": {
      "en_GB": "Attachments"
    }
  },
  "token": "AbCdEfGhIjKlMnOp",
  "updated": "2025-04-27T01:05:00Z"
}