curl --request POST \
  --url https://api.artu.ai/documents/count \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'X-Environment: <api-key>' \
  --data '
{
  "filter": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "clientId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "type": "<string>",
    "externalId": "<string>",
    "expiresAt": "2023-11-07T05:31:56Z",
    "createdAt": "2023-11-07T05:31:56Z",
    "updatedAt": "2023-11-07T05:31:56Z",
    "metadataFilters": [
      {
        "key": "<string>",
        "value": "<string>"
      }
    ]
  }
}
'

{
  "count": 0
}