{
  "manageEntity": {
    "action": "Create",
    "entityId": "1599309478",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1599309478,\"description\":\"\",\"playlist_name\":\"New Playlist\",\"is_private\":true,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[]}}",
    "nonce": "0xb4a7f32d496d4e6392cf3a40f14d721b7ff9de11431773211eaf179a57daebc1",
    "signature": "0x38c191723acbe8deab81b499cd636857081290df8f4c6f583d89b1a74a0ded505051e5792de8d941e385ee61c2f9a1771f07199a6854675937ca12fe7c3dcb121b",
    "signer": "0x4500303E05fBbcF978dbd09d73Dc6e8084A6f1b0",
    "userId": "834909005"
  }
}