curl --request GET \
  --url https://api.member.dev/api/v1/teams/{team_id}/hubs/{hub_id}/contact-attributes \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "attributes": {
        "created_at": "2023-11-07T05:31:56Z",
        "definition_id": "<string>",
        "hub_id": "<string>",
        "is_in_onboarding": true,
        "is_in_profile": true,
        "is_read_only": true,
        "is_required": true,
        "position": 123,
        "updated_at": "2023-11-07T05:31:56Z"
      },
      "id": "<string>",
      "type": "contact_attribute_hub_configs"
    }
  ],
  "meta": {}
}