curl --request GET \
  --url https://api.halth.com/v1/user

{
  "members": [
    {
      "id": "<string>",
      "roles": [],
      "permissions": []
    }
  ],
  "organisations": [
    {
      "id": "<string>",
      "roles": [],
      "permissions": []
    }
  ],
  "businesses": [
    {
      "id": "<string>",
      "roles": [],
      "permissions": []
    }
  ]
}