{
  "manageEntity": {
    "action": "Update",
    "entityId": "1599309478",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"أناشيدي\",\"is_private\":true,\"playlist_image_sizes_multihash\":\"\",\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[]}}",
    "nonce": "0xc1207882c2c1ae8974d28c09bad1462c4a214cb9882ad6bf160071aca274380f",
    "signature": "0xb61505d522a40353cb22055ecce4592ba087557792d6d651755a1324d1ee8c075d6c57b53b44b0f681ff0140cc7cf87c05422a746649aa0b4b3095d8e055b7931b",
    "signer": "0x4500303E05fBbcF978dbd09d73Dc6e8084A6f1b0",
    "userId": "834909005"
  }
}