curl --request POST \
  --url https://api.duvo.ai/v2/queues/{queue_id}/cases/{case_id}/labels \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "labels": [
    {
      "value": "<string>",
      "key": ""
    }
  ]
}
'

{
  "labels": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "key": "<string>",
      "value": "<string>",
      "color_hue": 180
    }
  ]
}