{
  "manageEntity": {
    "action": "Update",
    "entityId": "1802528072",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"First\",\"is_private\":true,\"license\":\"\",\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"parental_warning_type\":null,\"playlist_contents\":[{\"timestamp\":1780438084,\"track_id\":1871700446}],\"is_stream_gated\":false,\"stream_conditions\":null,\"is_scheduled_release\":false}}",
    "nonce": "0x242462ce84fe0fb17739c1a2224422aed28f3d1d38b0d2839d36271e91cd9b52",
    "signature": "0xf3d2cbb30a9ddd714ef62f6e02a058142a8f3bb09847b361f7f2d7eb206636200fce027d2883e30a374e69a7a2845c6f7de86b4ff56a9a97142c1e7badbcadce1c",
    "signer": "0x4De9d38db858557347eed99894D648DFa2eE7B9F",
    "userId": "950500563"
  }
}