curl --request POST \
  --url https://api.anysite.io/api/linkedin/management/chat/attachment/base64 \
  --header 'Content-Type: application/json' \
  --header 'access-token: <api-key>' \
  --data '
{
  "account_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "cookies": [
    {
      "name": "<string>",
      "value": "<string>"
    }
  ],
  "proxy": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "file_url": "<string>",
  "timeout": 300,
  "company": {
    "type": "<string>",
    "value": "<string>"
  }
}
'

[
  {
    "file_name": "<string>",
    "media_type": "<string>",
    "content": "<string>"
  }
]