{
  "manageEntity": {
    "action": "Create",
    "entityId": "950342485",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":950342485,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Pop\",\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"title\":\"Café Tacvba - Eres _ [Letra en Español](MP3_160K)\",\"duration\":263,\"audio_upload_id\":\"415f9906f2192233740e0425d3034b2e\",\"track_cid\":\"baeaaaiqsed4zpjj6tclly5vf3rgxfp4pebf3tbphqonx25kxwb5if2otbg5d4\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsec5wfj4loqceajoskpze45fl5ryagbczz7eviupm4zlko4zkyqnac\",\"orig_filename\":\"Café Tacvba - Eres _ [Letra en Español](MP3_160K).mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":100,\"is_custom_bpm\":false,\"musical_key\":\"A minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":751326187,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsec6oxpg5anqrxynzhztfwrqhzi3mehz2mvqynighsw6sszpeif7wc\"}}",
    "nonce": "0xac094eb448f7dbded33e727898d4a54821e9e0cd0f31d73fd08af743318d0976",
    "signature": "0x09604d53393ba659daf95fc4e0b1b503631cc52e206f53cf057b67833964137b6478ca0cdb2eac474373368c254aaf7de754c847ae9fde63e14ea95279a09bd81b",
    "signer": "0x9C3b29274082C87a3992Ce295A6747F6783D3A76",
    "userId": "751326187"
  }
}