{
  "manageEntity": {
    "action": "Create",
    "entityId": "632714443",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"title\":\"sample-3s.mp3\",\"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\":1898550434},\"owner_id\":693608897,\"track_cid\":\"baeaaaiqsea4fmqqjjxnxsbzghte2a4eftb2wmmd443lwvphtflhjeeyptzt24\",\"orig_file_cid\":\"baeaaaiqsebrh45ene644tfyqbimaw4xmr6kbfi2kuk3zn3unjtzuwgdjz7nie\",\"orig_filename\":\"sample-3s.mp3\",\"audio_upload_id\":\"018121a274ad02297b37d727f549ec95\",\"duration\":3,\"audio_analysis_error_count\":1}}",
    "nonce": "0xa1a48e7d7dda8d3ecc04a6a03fb63038d4ae18fe7e3eab533cd15eb08e531922",
    "signature": "0xa718b07646e2ba1fc35894c252d56259e216d4101c24063ea7880b8d8b8890db3a1db01a49aa4442ec4963ebf1af7864938f123b2e9c91aaacc68a548d623ffd1b",
    "signer": "0x1a14b86421cFD1157bB52D3B0799f0B24a926D3e",
    "userId": "693608897"
  }
}