Add new subtitles:

Full details:

{
  "video_quality": "plus",
  "tracks": [
    {
      "type": "audio",
      "primary": true,
      "max_channels": 2,
      "max_channel_layout": "stereo",
      "id": "WZwOkDirF02nUI7z3K6EDXD8gUKyuLQjzJwBLuOgwCd8"
    },
    {
      "type": "video",
      "max_width": 1920,
      "max_height": 1080,
      "max_frame_rate": 30,
      "id": "XtEtcocLiSSK6nKXBCWwlUmeEJ00AnkrIfGZt7B3AGOY"
    }
  ],
  "status": "ready",
  "resolution_tier": "1080p",
  "recording_times": [
    {
      "type": "content",
      "started_at": "2024-10-29T18:28:41.684Z",
      "duration": 4435.208
    }
  ],
  "progress": {
    "state": "completed"
  },
  "playback_ids": [
    {
      "policy": "public",
      "id": "fy5Q8WRRRY1wpU8yPTJqOLoI8cs8NZpn5e3JUDhUSRo"
    }
  ],
  "mp4_support": "none",
  "max_stored_resolution": "HD",
  "max_stored_frame_rate": 30,
  "max_resolution_tier": "1080p",
  "master_access": "none",
  "live_stream_id": "GcSExbmkF22vB5WFhlM7fBQrqHnrqc3xcAcsiP3mPF4",
  "ingest_type": "live_rtmp",
  "id": "n7LOi5tP4IckYDuVhPiJ3JJNTKLZ19xELnAVYS9qAxU",
  "encoding_tier": "smart",
  "duration": 4435.208333333333,
  "created_at": "1730226521",
  "aspect_ratio": "16:9"
}