asp.net mvc - C# MVC can't Deserialize a tuple

Question

I have a Json model that looks like this

private class SearchMetadataJson
{
      public string entertain { get; set; }
      public string master { get; set; }
      public string memail { get; set; }
      public string key { get; set; }
      public (int, string)[] mood { get; set; }
      public int? soundnumber { get; set; }
      public int? ftv { get; set; }
      public int? com { get; set; }
      public (int, string)[] sims { get; set; }
      public (int, string)[] keysecond { get; set; }
      public string popt { get; set; }
      public (string, string) syncs { get; set; }
 }

And I try to de-serialize the object like this

var CommentObj = JsonSerializer.Deserialize<SearchMetadataJson>(CommentAsString);

The data that I'm trying to de-serialize (aka "CommentAsString") looks like this

"{"entertain":"PEG","master":"Phos Ent Group","memail":"[email protected]","key":"Db","mood":{"1":"TypeA","4":"TypeB","5":"TypeC"},"soundnumber":"5","ftv":"4","com":"3","sims":{"1":"Band1","2":"Band2"},"keysecond":{"1":"KeyWord1","2":"KeyWord2","3":"KeyWord3"},"syncs":{"Other pubber":"[email protected]"}}"

But I keep getting this error

Does anyone see what the problem is?

Update
The integers in CommentAsString are variables and will be different every time the function is called so I can't make a Json Object that has a key value of a particular integer.

Answer 1

Lets look at the actual formatted data structure

{
   "entertain":"PEG",
   "master":"Phos Ent Group",
   "memail":"[email protected]",
   "key":"Db",
   "mood":{
      "1":"TypeA",
      "4":"TypeB",
      "5":"TypeC"
   },
   "soundnumber":"5",
   "ftv":"4",
   "com":"3",
   "sims":{
      "1":"Band1",
      "2":"Band2"
   },
   "keysecond":{
      "1":"KeyWord1",
      "2":"KeyWord2",
      "3":"KeyWord3"
   },
   "syncs":{
      "Other pubber":"[email protected]"
   }
}

Converting these to an array of tuple would be unusual. What you seemingly have are dictionary's

Example

private class SearchMetadataJson
{
      public string entertain { get; set; }
      public string master { get; set; }
      public string memail { get; set; }
      public string key { get; set; }
      public Dictionary<int,string> mood { get; set; }
      public int? soundnumber { get; set; }
      public int? ftv { get; set; }
      public int? com { get; set; }
      public Dictionary<int,string> sims { get; set; }
      public Dictionary<int,string> keysecond { get; set; }
      public string popt { get; set; }
     // public (string, string) syncs { get; set; }
 }

Its debatable whether the last property is an object or another dictionary as well...

"syncs":{
   "Other pubber":"[email protected]"
}

However, ill leave that up to you