curl --request POST \
  --url https://{subdomain}.nudj.cx/api/v2/admin/tags \
  --header 'Content-Type: application/json' \
  --header 'x-api-token: <api-key>' \
  --data '
{
  "value": "<string>",
  "config": {
    "filtering": [
      "achievement"
    ],
    "display": [
      "achievement"
    ],
    "iconifyIcon": "<string>"
  }
}
'

{
  "id": "<string>",
  "organisationId": "<string>",
  "value": "<string>",
  "config": {
    "filtering": [
      "achievement"
    ],
    "display": [
      "achievement"
    ],
    "iconifyIcon": "<string>"
  },
  "createdAt": "<string>",
  "updatedAt": "<string>",
  "createdBy": "<string>",
  "updatedBy": "<string>"
}