{
  "manageEntity": {
    "action": "Create",
    "entityId": "1957886479",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1957886479,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Rock\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"Yellow Submarine\",\"duration\":162,\"audio_upload_id\":\"0d8284513adedc83756edb7b09f2b731\",\"track_cid\":\"baeaaaiqsecn5jbywdtyegxzmc7bvx5o2yimzocdpyafj7ohtkaqgbtzf64e5m\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsedyuf3m37tkp2bjjsjrtyx62tmv7uapgdswzsnkpdtqobus4yfcki\",\"orig_filename\":\"06 The Beatles - Yellow Submarine.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":107,\"is_custom_bpm\":false,\"musical_key\":\"D flat major\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":770972221,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsebrmhtyweq27x34cd7ys2nlwnvpbikrgapygxjel2ivo64d3eipiw\"}}",
    "nonce": "0x572b7894a9ba240ed21596ba076c01d7daa363165695043cd3b2cc3802b1976c",
    "signature": "0x68843bf1f0c71b4818fa10a05ed093943c6b28ec8b46e6e8086c9c68e207305825ce6e8b48c17cc04dde413a0264551c019bdf1e02eeb0470b413ed473433c601b",
    "signer": "0x286E31053F87209F966e1009BB419fb4302C7d11",
    "userId": "770972221"
  }
}