Get all assets

curl --request GET \
  --url http://localhost:8002/entities/asset \
  --header 'Authorization: Bearer <token>'

{
  "assets": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "external_id": "<string>",
      "type": "boundary meter",
      "site_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
    }
  ],
  "total_num_assets": 123,
  "total_num_pages": 123,
  "page_number": 123
}