query File($id: ID!) {
  file(id: $id) {
    id
    object
    livemode
    created
    updated
    purpose
    filename
    content_type
    size
    sha256
    url
    url_expires_at
    expires_at
  }
}

{
  "id": "file_1a2B3c"
}

{
  "data": {
    "file": {
      "id": "file_1a2B3c",
      "object": "file",
      "livemode": true,
      "created": 1791302400,
      "updated": 1791302400,
      "purpose": "customs_document",
      "filename": "example",
      "content_type": "example",
      "size": 2,
      "sha256": "example",
      "url": "https://example.com/resource",
      "url_expires_at": 1791302400,
      "expires_at": 1791302400
    }
  }
}