{
  "manageEntity": {
    "action": "Create",
    "entityId": "199497792",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"New Playlist\",\"is_private\":true,\"cover_art_cid\":\"\",\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"parental_warning_type\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[],\"playlist_image_sizes_multihash\":\"\"}}",
    "nonce": "0x919223c440097be1234955e4d2b120c9d61e037b87a0ee67410dd07369d94a87",
    "signature": "0x52e437be460186a21a13f042b5978894af960bba92a7c0b9598c3677e9a9d26901ea74a0332e3b2b338440f48ffc246dce253f7d89aef2807c0bd9b529d5cb7f1c",
    "signer": "0xF9e681F290cD135E7F24F5db3ebbee5Fd1Fcf84f",
    "userId": "344863252"
  }
}