{
  "manageEntity": {
    "action": "Create",
    "entityId": "1447064590",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1447064590,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":false,\"play_count\":false,\"remixes\":true},\"genre\":\"Alternative\",\"isrc\":null,\"is_unlisted\":true,\"iswc\":null,\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"title\":\"Sad Stuff\",\"duration\":207,\"audio_upload_id\":\"112b1fc5a0edc1dee124b0665fad1c2d\",\"track_cid\":\"baeaaaiqseaggckuao7zudj6vl2cxkb2wro3ai6rtaisgyvqfma4kmuqyrxft6\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseaq3g7j3l2zcpkmnkyl22bko4sstrfsxzsbg5jw2i3fpib64obrtm\",\"orig_filename\":\"Sad Stuff.wav\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":true,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":102,\"is_custom_bpm\":false,\"musical_key\":\"D minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":480690360,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsec3caafacz3xhes5pwav5m747ipuyvcadqkbs2paejmo2yqygrcdu\"}}",
    "nonce": "0x19d4b83a55291f220442ae5135291cde5eb11c0d5c1bc95d90e7fabf87c93da0",
    "signature": "0xcf1c17e4b9550dae9b72baf7ca9aed658ea6da14fb15f4c34bd2b9ebffba6f58202f104cbd0a08e822deaef9fea25ebffb21aee33ade34b5c8ae249cd430a33a1c",
    "signer": "0x042d6751bB8a4D636e93Dd32142A27AB375fc4aa",
    "userId": "480690360"
  }
}