{
  "manageEntity": {
    "action": "Create",
    "entityId": "1338752721",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1338752721,\"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": "0xb320de0afdf2b511b4f68ae4f62cc69eff524d4634d9658423fe75aea9e777b8",
    "signature": "0x8a1d4be35523f8a84f742f88066f5bdebd7bedac1129758705835dac15a3a4cf7ce85a4d07fa55291102fa601e832e8937833e8a81eeaa17180eea9baadb0c9f1b",
    "signer": "0x04C504928B4945dAF4D6c8D84353Dc1ab5000C1F",
    "userId": "422886157"
  }
}