{
  "manageEntity": {
    "action": "Update",
    "entityId": "195614225",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"Test\",\"is_private\":false,\"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": "0x762a959faeca24587ccbebc76d4c11f1d3152c5f99f7d268800b0ee0d409e5ec",
    "signature": "0x9751aa8682088ff6f5f09bf6ce5c9ab0bc849db99a22123baf069181a71ef97f7ae3ee8cdc61ccbcaddeef3f71e2af5e66360bff9b53aeda24712bd8d430070f1b",
    "signer": "0x61F949f996483EB7EAf30b9bDA9010A86bAe9BeF",
    "userId": "733158140"
  }
}