curl -H "X-API-Key: $PARTICLE_API_KEY" \
  "https://api.particle.pro/v1/podcasts/publishers/{id}/advertising"

{
  "ads_per_active_podcast": 123,
  "coverage": {
    "active_coverage": 123,
    "active_podcasts": 123,
    "total_podcasts": 123
  },
  "episode_reach": 123,
  "network_buyers_count": 123,
  "publisher": {
    "id": "<string>",
    "name": "<string>",
    "slug": "<string>"
  },
  "read_type_breakdown": {
    "host_read": 123,
    "pre_recorded": 123
  },
  "top_sponsors": [
    {
      "ad_count": 123,
      "episode_count": 123,
      "podcast_coverage": 123,
      "sponsor_name": "<string>",
      "company_id": "<string>",
      "slug": "<string>"
    }
  ],
  "total_ads": 123,
  "unique_sponsors": 123
}

{
  "detail": "<string>",
  "error_code": "<string>",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "<string>",
  "resolve": {
    "message": "<string>",
    "action": "<string>",
    "endpoint": "<string>",
    "method": "<string>",
    "url": "<string>"
  },
  "status": 123,
  "title": "<string>",
  "type": "about:blank"
}