curl --request POST \
  --url https://api.zenskar.com/tags \
  --header 'Content-Type: application/json' \
  --header 'organisation: <api-key>' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "holder": "INVOICE",
  "item_id": "inv_123",
  "tags": {
    "department": "sales",
    "priority": "high"
  }
}
'

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}