{
  "caption": "A short look at how this piece was made.",
  "channels": ["spc_your_instagram_channel", "spc_your_youtube_channel"],
  "media": ["https://cdn.example.com/your-video.mp4"],
  "scheduledAt": "2030-01-15T10:00:00Z",
  "options": {
    "instagram": { "placement": "reels" },
    "youtube": { "title": "How this piece was made", "privacyStatus": "public" }
  }
}