{
  "manageEntity": {
    "action": "Create",
    "entityId": "1452448616",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1452448616,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Electronic\",\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":null,\"mood\":\"Cool\",\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"title\":\"Brother Louie\",\"duration\":244,\"audio_upload_id\":\"8b2da890c5e8fc90674e2999569e748e\",\"track_cid\":\"baeaaaiqseciud6hwyusjeoaeguccu3ri5rnyjs734ade5wskr2cvxjv3coeaw\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseb63bpy2kfetunoydm2l36npx4zrw3fmlx7ykyje3aeghbtoqged2\",\"orig_filename\":\"Brother Louie.m4a\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":114,\"is_custom_bpm\":false,\"musical_key\":\"D flat minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":850416615,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqseaif7bupronaxkmjnfet2mjynuquvljpbiuasprbahtgcgsc4cho2\"}}",
    "nonce": "0x00f3f151eef4ddf7a3bb594787cbad8c742cfcf35e02c94a0631ee2f3262d1bf",
    "signature": "0x1a45be77f63376b513d61bcf03fbe1ddeeea0e2fd2942d8d4136f605e2376926245c2a51ab9afce5dcd6e9e45a863dcdd730c8d4bb5875c48406c5c734f20bf81c",
    "signer": "0xB57F94Ef9a26d73E8b35D3f37FccD18BcC7eeE00",
    "userId": "850416615"
  }
}