curl --request POST \
  --url https://api.example.com/api/core/knowledge_assets \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "label": {
    "en": "<string>",
    "de": "<string>",
    "es": "<string>",
    "fr": "<string>",
    "it": "<string>",
    "nl": "<string>",
    "pl": "<string>",
    "pt": "<string>",
    "sv": "<string>"
  },
  "description": {
    "en": "<string>",
    "de": "<string>",
    "es": "<string>",
    "fr": "<string>",
    "it": "<string>",
    "nl": "<string>",
    "pl": "<string>",
    "pt": "<string>",
    "sv": "<string>"
  },
  "knowledge_source_ids": [
    "<string>"
  ],
  "is_selected_by_default": true
}
'

{
  "message": "<string>"
}