{
  "manageEntity": {
    "action": "Create",
    "entityId": "278520679",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":278520679,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Spoken Word\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"mood\":\"Gritty\",\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"The First Stone\",\"duration\":246,\"audio_upload_id\":\"01KRP4A82QZZXTRJFXRRFTB827\",\"track_cid\":\"baeaaaiqsedstj4hduobg6wmpaejfpbbje6s5v7aiimxtef43zq4jyj6ritxuu\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsebpev5tmp2be5pzhzli4jwwffh4x5cqdvniv7vap3rsgcd6dac62g\",\"orig_filename\":\"The First Stone.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":107,\"is_custom_bpm\":false,\"musical_key\":\"D minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":831117417,\"track_segments\":[],\"cover_art_sizes\":\"01KRP4A75DCP0DV5X15D71VRX5\",\"audio_analysis_error_count\":0}}",
    "nonce": "0xfa1ca0984a3b7279e97ce29af739ff6152fb2cadb9c97be10ba0d76be96f2ed9",
    "signature": "0xdcfee60a9f14352aced7b340d5c40a8958fbd77729e5c29be8313bd97ffb55941b5f45bb5ad3a8406eea653b24393e94cf8c85d3549f854769f44c8942c37e7b1b",
    "signer": "0x92328BFDeD38C9a9De6E253A0CF5CB46A3B28611",
    "userId": "831117417"
  }
}