{
  "manageEntity": {
    "action": "Create",
    "entityId": "1878036478",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1878036478,\"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": "0x21711cc41d8431a3b7c3b9c14071fe6036841bd1461910b1e7f85e75b8cbd3ac",
    "signature": "0x7d51fb7bc1f1b1c858ae69d03fd51219cea23161b3f45b375680e18658c101d939543ccbfa5a5ab9d1476996c204786e176d2120bb4b4c6462f39a40e9bd63811b",
    "signer": "0x59c0f1E371bdb2C9b431bFF30bDF17A9c61615C9",
    "userId": "224200519"
  }
}