curl -H "X-API-Key: $PARTICLE_API_KEY" \
  "https://api.particle.pro/v1/podcasts/advertising/leaderboard?limit=25&metric=ad_count"

{
  "data": [
    {
      "rank": 123,
      "sponsor": {
        "ad_count": 123,
        "episode_reach": 123,
        "id": "<string>",
        "name": "<string>",
        "podcast_reach": 123,
        "company": {
          "id": "<string>",
          "name": "<string>",
          "image_url": "<string>"
        },
        "first_seen_at": "2023-11-07T05:31:56Z",
        "last_seen_at": "2023-11-07T05:31:56Z"
      }
    }
  ],
  "has_more": true,
  "cursor": "<string>"
}