{
  "manageEntity": {
    "action": "Create",
    "entityId": "769072230",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"title\":\"Unspoken_String.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\":377679423},\"owner_id\":910556252,\"track_cid\":\"baeaaaiqsebdq4y7aqjyfgyfqxvgrc6rgspgcj7awppxy7tgied443lf3e53gi\",\"orig_file_cid\":\"baeaaaiqsedj52w4yv5v2qj62oc6l5shh2yufhib2kzaevxxszbtsmtmpmbddw\",\"orig_filename\":\"Unspoken_String.wav\",\"audio_upload_id\":\"30d755489bcefdcb70b678f52cd8f7ee\",\"duration\":200,\"bpm\":136,\"musical_key\":\"G minor\",\"audio_analysis_error_count\":0}}",
    "nonce": "0x12e741980a53f2659265fbc6ef9029acb06e79f274a2ed4cc7dcf81496cd30d9",
    "signature": "0xafbf15efab82972244d14af00a6594ee45d2e93cf012de3d6e20cf8390bf522126138e00a213552a2eae93ff19daed1615a8c7f3a94b0c3bc5b624b1ce48403b1b",
    "signer": "0xfa7F35AA3E09422AB31fEf9ABfd2c5f69564e739",
    "userId": "910556252"
  }
}