{
  "manageEntity": {
    "action": "Create",
    "entityId": "1450008658",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"title\":\"Mids - Drop 2 Mid Basses.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\":\"BASS\",\"parent_track_id\":1892405197},\"owner_id\":94317,\"track_cid\":\"baeaaaiqsecrcwzvpwl7h7qc7krn26xb4byly6zckxrq5qrlyn3jokvmsqmv4q\",\"orig_file_cid\":\"baeaaaiqseb4edmvbiltc5auktbwedwx5hezoax2buq63txoeoaphfsrgj5kc6\",\"orig_filename\":\"Mids - Drop 2 Mid Basses.wav\",\"audio_upload_id\":\"5a146105035a62f7d47d1f847d9a3dd7\",\"duration\":197,\"audio_analysis_error_count\":1}}",
    "nonce": "0x227eadba2eeb2a06afcd5163ec5c464da1dde18f1875a85855c56e5b3dd77d6d",
    "signature": "0x5e41f9ba50b9639892bd963188582031d53c03c413c3eb35ed10ac686d2cc8560053e2445059e8e3decba410c8d60d4c927fd8e7526ba38b04da87e9dfcc4b621b",
    "signer": "0xC922b0f44F7050c6A066BB1c2dF2243426C9A136",
    "userId": "94317"
  }
}