{
  "manageEntity": {
    "action": "Create",
    "entityId": "666808292",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":666808292,\"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": "0xbf63149c31b945f923bfca3e0e38ac3da60aece716e81d164e4a221b8f3c3de2",
    "signature": "0x6888f412cbdfbcd8a8520cced6ecf30d4ff28f81591309f16c8e37ae76f9b2ef58f7e3fca22c06134ffbd775b182e4ffa2b2701d3d12526af4adcfa0965b848f1b",
    "signer": "0x383D521848eBaEd728882257C17407e966e21659",
    "userId": "42668473"
  }
}