{
  "manageEntity": {
    "action": "Create",
    "entityId": "1852977293",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1852977293,\"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": "0x3866ee98373893df58357b6ea0d2494f09ae4fb5d2f7a881e7abf5ce2ac4173a",
    "signature": "0x157b881f42b474879b0797f77e02f6e0357c5906966638368d963eabfe59186268e7109295f44e44803973706e5ed0ee473436a91395b00ad95afba8154f8d8d1b",
    "signer": "0xff56e94800bDdD3478A34765243D06F0240D7BEf",
    "userId": "128375910"
  }
}