{
  "manageEntity": {
    "action": "Create",
    "entityId": "1186846609",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1186846609,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Sad Pop\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"Hopeful Signal\",\"duration\":152,\"audio_upload_id\":\"2011dce7e2fc91b40584435397aabf4e\",\"track_cid\":\"baeaaaiqsed4kt7v6syo2iw7salcpv5hqw4m5bvv56vnea5rou47a34ye4egve\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsedulnz4azohuc6luvl4esy76cx3ndbxoa5kjgrxruadwkfwq5v75g\",\"orig_filename\":\"Hopeful Signal.wav\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":126,\"is_custom_bpm\":false,\"musical_key\":\"G major\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":701658804,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsecnw2kj4ewo4pp27qhvinhgaa5o6siicgj2wcnmbn3lcx3cb6jscy\"}}",
    "nonce": "0x791923a6afa0cc67896cf5c703cf85093d894e4f13ec9911174787113a9d055b",
    "signature": "0x1499bf98f5f5e585eda0f4d9e00b6f9cfea778767a7e4a8df69e434c11179fb818a86948bc5876a97b815f572757a33464c958aefdcd516e42064bc3ad6f0fc91c",
    "signer": "0x68833ff261f5D2053c7f70f344CF3317811fa1A4",
    "userId": "701658804"
  }
}