{
  "manageEntity": {
    "action": "Create",
    "entityId": "1831275871",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1831275871,\"description\":\"\",\"playlist_name\":\"test ray\",\"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": "0x136dd4c38871557e0f251021781aa57cada81f8e371685ef38852d12bc16aac4",
    "signature": "0xcc0b36fbb965bcd8f801ecba5b4a5d914ff2824354567f0e730e64f134aa25815f48fc48bbe9b7cdc6bd6a785e06ca1a25a57d6ee5e555cac4d7a1115fbebea31b",
    "signer": "0x7D273271690538cF855E5b3002A0dD8c154bB060",
    "userId": "1"
  }
}