{
  "manageEntity": {
    "action": "Create",
    "entityId": "1453952596",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1453952596,\"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": "0x8a265f1c70e823e178b1480a11c80bdc52c75f084f067b245f19b249a2598194",
    "signature": "0x0c4b9b2733495b4f92c50ce9adea7bf74ebf4c69c95c5c015adab71be7133c9269e6e6d29bd75287150527576dad8a07fe4985ee906f154307e55a8a6e2a9e111c",
    "signer": "0x54B193bF6F1e27B02Cd72343a3e68cd19c0110a5",
    "userId": "492531535"
  }
}