{
  "manageEntity": {
    "action": "Create",
    "entityId": "1555049784",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"title\":\"0 Lead Vocals.wav\",\"is_stream_gated\":false,\"is_unlisted\":false,\"field_visibility\":{\"genre\":true,\"mood\":true,\"tags\":true,\"share\":true,\"play_count\":true},\"is_downloadable\":true,\"stem_of\":{\"category\":\"OTHER\",\"parent_track_id\":382425628},\"owner_id\":42634173,\"track_cid\":\"baeaaaiqsedxqg6xs2udi7g6w53nbmnhfd4xga5kgn433ht5rwzhn7d64kht72\",\"orig_file_cid\":\"baeaaaiqsedj5swq2ielkb7mi7ircudhtn4loeinuvp2egqmtzft2ojwltkbts\",\"orig_filename\":\"0 Lead Vocals.wav\",\"audio_upload_id\":\"08018cbb3047d82b92f470b60d35f3bc\",\"duration\":209,\"bpm\":93,\"musical_key\":\"B flat minor\",\"audio_analysis_error_count\":0}}",
    "nonce": "0xde7de9cdd5a8a91eaf6dfcc9a501bffd417526d1b9a1b864a434e724250193e4",
    "signature": "0x0cabb7d832761d2282558d118ac55566bb39448cf38db5badfb6b146fbd140af31cc75d4a59ae96cb410063653bf7d210550c868b3c960ac084d9991f10ba3791c",
    "signer": "0x18a7B3405E81900d8aF72d98D5f2C54e2C988f9b",
    "userId": "42634173"
  }
}