curl --request POST \
  --url https://api.anysite.io/api/substack/publications \
  --header 'Content-Type: application/json' \
  --header 'access-token: <api-key>' \
  --data '
{
  "publication": "<string>",
  "timeout": 300
}
'

[
  {
    "id": 123,
    "@type": "@substack_publication",
    "name": "<string>",
    "alias": "<string>",
    "custom_domain": "<string>",
    "hostname": "<string>",
    "base_url": "<string>",
    "description": "<string>",
    "copyright": "<string>",
    "language": "<string>",
    "homepage_type": "<string>",
    "created_at": "<string>",
    "first_post_date": "<string>",
    "image": "<string>",
    "logo_wide": "<string>",
    "cover_image": "<string>",
    "author_id": 123,
    "author_name": "<string>",
    "author_handle": "<string>",
    "author_bio": "<string>",
    "author_image": "<string>",
    "twitter_screen_name": "<string>",
    "free_subscriber_count": 123,
    "subscriber_count_label": "<string>",
    "payments_state": "<string>",
    "is_personal_mode": true,
    "is_explicit": true,
    "is_invite_only": true,
    "is_community_enabled": true,
    "has_posts": true,
    "has_podcast": true,
    "has_recommendations": true,
    "has_community_content": true,
    "podcast_enabled": true,
    "podcast_title": "<string>",
    "podcast_description": "<string>",
    "podcast_byline": "<string>",
    "podcast_feed_url": "<string>",
    "podcast_image": "<string>",
    "plans": []
  }
]