This endpoint generates an upload URL for file uploads, such as images, to the storage.
image/png
image/jpg
image/jpeg
`{ "upload_url": "string", // URL to upload the file "file_id": "string", // File ID for the uploaded file "download_url": "string" // Download URL for the file }`
`Invalid or expired token`
`{ "error": "string" // Error message detailing why the URL generation failed }`