{
  "manageEntity": {
    "action": "Create",
    "entityId": "839595086",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":839595086,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Pop\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"mood\":\"Romantic\",\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"kdrama,love\",\"title\":\"아직도 사랑해 - I Still Love You - Part 5\",\"duration\":209,\"audio_upload_id\":\"a8111922c11bfbd9e8b5ecac1d2438e3\",\"track_cid\":\"baeaaaiqsedcmpdvxqnpnowwnpf6jxno4gmhkxkwaqg67snn7h4pnbeb3lncbq\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseapslp6bdassgsrmd77eslykterk4ex5zzhkl6aeq5jgvo5ntvqac\",\"orig_filename\":\"아직도 사랑해 - I Still Love You - Part 5.wav\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":84,\"is_custom_bpm\":false,\"musical_key\":\"B flat major\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":410578161,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsebzsk2djosift2byn6hctwtxhpivpi6rdburyskknyi5hp3fer7ge\"}}",
    "nonce": "0xd4a1d26a8090a5a0723b5a6614fb53488d913ed7a70220c1e96422419c51821d",
    "signature": "0xc175b1e5fadb930322cccf63ebcfc8872421a976ab762a1784e67990a36b7cf21d9621e6dd008412998ad400016af08c4521eda13bc23a15c58419b20fb38a201b",
    "signer": "0xd56d9444ff70A29c3F9c056414860a202d9C2fb2",
    "userId": "410578161"
  }
}