Add new subtitles:

Full details:

{
  "video_quality": "basic",
  "upload_id": "trqv1RAxf5019H9V02VX01Nk4648C02S7fJWmhyCm01rRhzc",
  "tracks": [
    {
      "type": "video",
      "max_width": 1920,
      "max_height": 1080,
      "max_frame_rate": 30,
      "id": "xp01VzOCSJeMNKL01QGLuoPlAoGmqUDk8qZBTeGD01piNI",
      "duration": 3603.933333
    },
    {
      "type": "audio",
      "status": "ready",
      "primary": true,
      "name": "Default",
      "max_channels": 2,
      "language_code": "und",
      "id": "mcAC9HTz00Nkvi00pxhiUtDfhTA01GHg00me6j9d01YdrqKsbVokj024vIqw"
    }
  ],
  "status": "ready",
  "resolution_tier": "1080p",
  "progress": {
    "state": "completed"
  },
  "playback_ids": [
    {
      "policy": "public",
      "id": "N02ETnwYqPtdd9IITdNBU00qU3AgZzHSTVBCaKgs3Oi6E"
    }
  ],
  "mp4_support": "none",
  "max_stored_resolution": "HD",
  "max_stored_frame_rate": 30,
  "max_resolution_tier": "1080p",
  "master_access": "none",
  "ingest_type": "on_demand_direct_upload",
  "id": "m61dI003slmW5mT022ogu2wVpgSTz4IiFih0201i9H8O4IA",
  "encoding_tier": "baseline",
  "duration": 3603.981222,
  "created_at": "1732386345",
  "aspect_ratio": "16:9"
}