{
  "manageEntity": {
    "action": "Create",
    "entityId": "1618856476",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1618856476,\"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": "0x50c27dcefdc2559c49b04cd32c0bd1e5393a19c1021a9a1a02ae5cd802769f13",
    "signature": "0x9431c7a776615292579b7a8acb17cbf53fce7a6b6ca3308617b6d486791a5e122dc47bc2a6467fa67c77abbab2693025380d923089e22505caa75cd012456cfd1c",
    "signer": "0xe688d44Dfbd1B55BfF4C33b8901E9b4E858673e6",
    "userId": "861777528"
  }
}