How to use JSON Array in API using ASP.Net

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ASP.NET

Hi...

I have to pass below details as input to the API.cs file for inserting customer record where contactPeoples as an JSON array with details like
[{Department:1, Name:'Manas', Email:'manas.kpatil@gmail.com' ,MobileNo : '1233', AlternateNo:'12344', isContactPerson:1}

so what will be the logic for writing the code for passing JSON array ....

Another input..
key
customerName
CompanyPhone
CompanyAddress1
CompanyAddress2
regionID
subregion1ID
subregion2ID
industryType1ID
industryType2ID