Send array of objects to .NET controller action

I am trying to pass a javascript array of objects to a .NET controller action List<> parameter. Below is my C#

public bool ImportACE([FromBody] List<Element> elements)
{
    foreach(Element e in elements)
    {
        uint srcAddrInt = ConvertIpAddressToUInt(e.SRC_Addr);
        Console.WriteLine($"The IP address {e.SRC_Addr} as an integer is: {srcAddrInt}");
    }            

    return true;
}

Below is the variable I am passing and the ajax call

importData.push({
  ACLId: 11,
  DeviceId: 2,
  ACLGroupId: 5,
  ProtocolId: 27,
  LiftDate: liftDate,
  ActionDate: actionDate,
  RemedyTckt: remedyTicket,
  ITSMTckt: itsmTicket,
 /* CommandView: cleanCmdVar,*/
  SRC_Addr: srcAddr,
  SRC_Mask: "0.0.0.0",
  DST_Addr: "0.0.0.0",
  DST_Mask: "255.255.255.255",
  ArinInfo: arin,
  FlagLogInput: 1,
  FlagLog: 0,
  Active: 0
});

var jsonData = JSON.stringify(importData);

$.ajax({
  url: '/GAM/ACE/Import',
  type: 'POST',             
  data: jsonData,
  contentType: "application/json; charset=utf-8",
  success: function (result) {
    if (result) {                   
        $('#loading-overlay').fadeOut();
    } else {
        alert("Error. Import unsuccessful.");
        $('#loading-overlay').fadeOut();
    }
  },
  error: function (jqXHR, textStatus, errorThrown) {
    $('#loading-overlay').fadeOut();
    alert("Unable to import data. Error with /GAM/ACE/ImportAce ." + errorThrown);;
  }
});

Here is the model, it's rather large

 public class Element
 {
     [Required]
     public int ElementId { get; set; }
     public int DeviceId { get; set; }
     public string Device { get; set; }
     public int ACLId { get; set; }
     public string ACL { get; set; }
     public int ACLGroupId { get; set; }
     public string ACLGroup { get; set; }
     public int SequenceNum { get; set; }
     public int ActionId { get; set; }
     public bool PermitBool { get; set; }
     public bool DenyBool { get; set; }
     public string Action { get; set; }
     public string Protocol { get; set; }
     public int ProtocolId { get; set; }
     public string SRC_Addr { get; set; }
     public string SRC_Addr_Int { get; set; }
     public string SRC_Mask { get; set; }
     public string SRC_Mask_Int { get; set; }
     public string SRC_OP { get; set; }
     public string SRC_B_Range { get; set; }
     public string SRC_E_Range { get; set; }
     public string DST_Addr { get; set; }
     public string DST_Addr_Int{ get; set; }
     public string DST_Mask { get; set; }
     public string DST_Mask_Int { get; set; }
     public string DST_OP { get; set; }
     public string DST_B_Range { get; set; }
     public string DST_E_Range { get; set; }
     public int FlagLog { get; set; }
     public int FlagLogInput { get; set; }
     public bool FlagLogBool { get; set; }
     public bool FlagLogInputBool { get; set; }
     public bool FlagTCPEst { get; set; }
     public bool FlagTCPAck { get; set; }
     public bool FlagTCPFin { get; set; }
     public bool FlagTCPPsh { get; set; }
     public bool FlagTCPRst { get; set; }
     public bool FlagTCPSyn { get; set; }
     public bool FlagTCPUrg { get; set; }
     public int ICMPType { get; set; }
     public string ICMPCode { get; set; }
     public string ICMPMessage { get; set; }
     public int IGMPType { get; set; }
     public int FlagPrecedence { get; set; }
     public string Precedence { get; set; }
     public int TOSId{ get; set; }
     public int FlagDSCP { get; set; }
     public string DSCP { get; set; }
     public int FlagFragments { get; set; }
     public int DynamicTimeOut { get; set; }
     public string DynamicName { get; set; }
     public string TimeRangeName { get; set; }
     public int FlagEvaluate { get; set; }
     public string EvaluateAcl { get; set; }
     public string ReflexiveAcl { get; set; }
     public int ReflexiveTimeout { get; set; }
     public string Remark { get; set; }
     public string CommandView { get; set; }
     public DateTime? LiftDate { get; set; }
     public DateTime? ActionDate { get; set; }
     public string RemedyTckt { get; set; }
     public string ITSMTckt { get; set; }
     public string ArinInfo { get; set; }
     public int UserId { get; set; }
     public DateTime AclTime { get; set; }
     public bool Active { get; set; }
     public bool Locked { get; set; }
     public bool Permanent { get; set; }
     public int Special { get; set; }    
     public int CMDType { get; set; }
     public int CMDOther { get; set; }
     public DateTime Modified { get; set; }
     public DateTime Created { get; set; }
     public long AuthorEDIPI { get; set; }
     public long EditorEDIPI { get; set; }  
     public string Editor {  get; set; }
     public string LogOptionId { get; set; }
 }

I am not sure what I am doing wrong. The element parameter for the controller is received and shows the objects in the list. But each object's values are null. None of the data is coming through. I can see the payload coming through correctly. Any suggestions are appreciated