curl --request GET \
  --url https://api.fungies.io/v0/users/{userId} \
  --header 'x-fngs-public-key: <api-key>'

{
  "status": "<string>",
  "data": {
    "user": {
      "object": "user",
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "username": null,
      "email": null,
      "details": null,
      "internalId": null
    }
  }
}