{
  "manageEntity": {
    "action": "Create",
    "entityId": "1842718991",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1842718991,\"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": "0x8874e2f1fad219cf258d531fc7f3a231a18c8d06d002318de2e4a5c780de4ea9",
    "signature": "0x28bb66ae9a0b846323442b4bddd3fbff1c4031625326ccdc289e677c8dc2f3d304b47c921d7774882158a6378b45bc82dd3f1ad7f2966e79b29a4593fc3d1c3d1c",
    "signer": "0x4489275EDE3B5561263a21082691c922E2c3d2f3",
    "userId": "537522818"
  }
}