{
  "manageEntity": {
    "action": "Create",
    "entityId": "403875063",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":403875063,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Jazz\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"mood\":\"Cool\",\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"Denver Gridlock Blues\",\"duration\":185,\"audio_upload_id\":\"01KTJEFYHSSV7ZDMEP7HEN3DAT\",\"track_cid\":\"baeaaaiqsecivp6lw22a7u25dhrnylrrx6di6xotkvkphbe6nkhymro4oqs5ns\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsebq454krh7cxmsangzbaceyzvktb2lovxdxiko2d7uftvviwvxqdy\",\"orig_filename\":\"Denver Gridlock Blues.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":87,\"is_custom_bpm\":false,\"musical_key\":\"G minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":831117417,\"track_segments\":[],\"cover_art_sizes\":\"01KTJEFXTBYH383WDKWPK5BF2E\",\"audio_analysis_error_count\":0}}",
    "nonce": "0x4d8d421ed693bc5e50b5d742c567ac17d18f6d3c1761b73c45b0eeab6fdeeeae",
    "signature": "0xca81767697eb23ea8c7497d372a178ceb7b6b2ce1676cd48e350d30bc6e53a0313c221f137157b14cbb4ec5a47289d26dcc754b9f4be02322f00d16c25933a401c",
    "signer": "0x92328BFDeD38C9a9De6E253A0CF5CB46A3B28611",
    "userId": "831117417"
  }
}