Convert FHIR model into FHIR JSON schema

Question

Let's say below is the FHIR model I have in C# for Patient resource.

    var pat = new Patient();        
    var name =  new HumanName().WithGiven("Christopher").WithGiven("C.H.").AndFamily("Parks");
    name.Prefix = new string[] { "Mr." };
    name.Use = HumanName.NameUse.Official;

How do I convert this into FHIR JSON Schema? Basically I want to serialize it. I am expecting the output like below

 {
  "resourceType": "Patient",
  "id": "xcda",
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"></div>"
  },
  "active": true,
  "name": [
    {
      "family": "Levin",
      "given": [
        "Henry"
      ]
    }
  ],
  "gender": "male",
  "birthDate": "1932-09-24",
  "managingOrganization": {
    "reference": "Organization/2.16.840.1.113883.19.5",
    "display": "Good Health Clinic"
  }
}

Also, I want to know is it possible to achieve this without using any FHIR external servers?