{
  "manageEntity": {
    "action": "Create",
    "entityId": "1621663487",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1621663487,\"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": "0xfd48c136e6c43ce9ca9540aebb2446e4a48e0dcd12f5e84bbb87f4f535b8d33a",
    "signature": "0x195f876deb7dd151d6abbdab9473b9ea93ab5972cccb936156fcb1fde5dc3b9376957cd13f03cd1220cf69ee162f49afd83381e4c1384609e05737b1caf8fe1c1c",
    "signer": "0x493c721c47344C3c5C9fB44bD4576E70CB4Ca70D",
    "userId": "211532313"
  }
}