curl --request GET \
  --url https://api.kejue.co/api/v1/contacts \
  --header 'X-API-Key: <api-key>'

{
  "contacts": [
    {
      "id": "<string>",
      "phone": "<string>",
      "whatsapp_number": "<string>",
      "email": "<string>",
      "first_name": "<string>",
      "last_name": "<string>",
      "company": "<string>",
      "job_title": "<string>",
      "country": "<string>",
      "timezone": "<string>",
      "language": "<string>",
      "tags": [
        "<string>"
      ],
      "metadata": {},
      "source": "<string>",
      "is_active": true,
      "created_at": "<string>",
      "updated_at": "<string>"
    }
  ],
  "total": 123,
  "limit": 123,
  "offset": 123
}