{
  "manageEntity": {
    "action": "Create",
    "entityId": "1137925880",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1137925880,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":false,\"play_count\":false,\"remixes\":true},\"genre\":\"Rock\",\"isrc\":null,\"is_unlisted\":true,\"iswc\":null,\"license\":null,\"mood\":\"Yearning\",\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"indierock,japan\",\"title\":\"Let It Begin (Remaster)\",\"duration\":337,\"audio_upload_id\":\"e894c60cd2489ae18e0acab8b8e39968\",\"track_cid\":\"baeaaaiqsebpu2yfargth7jaetxcilh5a5b42nxom5azcx52awu57mmrvjuhj2\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsec5x4bychqjoo6dzldldzjryn24n5sz3g7cfhn3sefs6j5y3gfnl4\",\"orig_filename\":\"Let It Begin (Revised 1).wav\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":true,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":108,\"is_custom_bpm\":false,\"musical_key\":\"E major\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":777704871,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqseczt4sdobdxoxc6kolr5ipardp3xfh3mwaesf3omvhkjzsyduz6fo\"}}",
    "nonce": "0x9ee3e9371e8b83a8d74a43070168c0ab3b531faae96b86a57667b00da587675c",
    "signature": "0x249fbd676c0c97aabc4227bea7854c72388b9b718ffa336df41ba4e7e70f4e621d4a8129b99ee2a582f9bb751b5fa141c3a01dc6ebde8a2894a28d1f3f6616e11c",
    "signer": "0xAB2c106A808170ffcCbeF493492c309f20a5D3eC",
    "userId": "777704871"
  }
}