{
  "manageEntity": {
    "action": "Create",
    "entityId": "1491429519",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1491429519,\"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": "0x3e06e09fa81784d8ac29b86d53172ae1a846c4fc83a8bf321c1483b742c625a4",
    "signature": "0x490b57571f5088bbdbe52c7a3db584ca85f951a3825a9bdac0bbef987019c9b67a5ed7002d045775371b87ee106dceaee8ab1299f8179f72c3720a99b9ea867c1b",
    "signer": "0xeaaDaeA3d82533Ad0D1BF4B88fd03EdE01320868",
    "userId": "457719352"
  }
}