{
  "manageEntity": {
    "action": "Create",
    "entityId": "1499847366",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_id\":1499847366,\"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": "0xfee0007d6a63ce83c05b75d57b34cab17bccaf1176a310becaae3be9549ba1ec",
    "signature": "0xc8e4c357a1dd8cd8c0d89adf157327c3656f2b1dc4481531b788e8f0a6781a0e597b624c421419b50194d892653109292a7a656c138428e69bcebc00a0eb31941c",
    "signer": "0x7deF33625A39F0c82e548F69aa14Db905C001F9B",
    "userId": "259513372"
  }
}