curl --request PATCH \
  --url https://realtime-api.voiceflow.com/v1alpha1/public/knowledge-base/document/{documentID} \
  --header 'Content-Type: knowledgeBase' \
  --header 'authorization: <api-key>' \
  --data '
{
  "data": {
    "documentMetadata": [
      {
        "key": "<string>",
        "values": [
          "<string>"
        ]
      }
    ],
    "metadata": {}
  }
}
'

{
  "data": {
    "documentID": "<string>",
    "data": {
      "type": "url",
      "name": "<string>",
      "url": "<string>",
      "refreshRate": "daily",
      "lastSuccessUpdate": "<string>",
      "accessTokenID": 123,
      "integrationExternalID": "<string>",
      "source": "zendesk"
    },
    "updatedAt": "2023-11-07T05:31:56Z",
    "status": {
      "type": "ERROR",
      "data": "<unknown>"
    }
  }
}