{
  "manageEntity": {
    "action": "Update",
    "entityId": "1505183576",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"Tunes\",\"is_private\":true,\"playlist_image_sizes_multihash\":\"baeaaaiqseaofnr4acf4sbrxksdsnvax4zgcgn7cf5lmg4u7pt3vp4iqyumhhw\",\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[]}}",
    "nonce": "0xd00310829a41d8e6cec49f91486129931b9f1cf2f85608274e842e26be825fd0",
    "signature": "0x28ba6da0fffbbd250b28b049277af582bd4502022cf966e76a0fb76a8a87a12748b60027c93d488ce5b1f0a6242cafa26986121dce283f5c1392d42d6c4499b01c",
    "signer": "0x7Eec440C3674292A66f7e20C5E6efAeaE5956B9a",
    "userId": "18002392"
  }
}