POST api/Billing/billing

{
  "billing_no": "sample string 1",
  "billing_code": "sample string 2",
  "patient_id": "sample string 3",
  "patientid": "sample string 4",
  "visit_report_id": "sample string 5",
  "hospitalid": "sample string 6",
  "hospital_id": "sample string 7",
  "visit_reportid": "sample string 8",
  "visit_type": "sample string 9",
  "created_by": "sample string 10",
  "billing_details_id": "sample string 11",
  "master_service_id": "sample string 12",
  "amount": "sample string 13",
  "service_quantity": "sample string 14",
  "discount": "sample string 15",
  "discount_type": "sample string 16",
  "dml_indicator": "sample string 17",
  "master_service_name": "sample string 18",
  "service_code": "sample string 19",
  "billing_class": "sample string 20",
  "wardid": "sample string 21",
  "price_matrix_id": "sample string 22",
  "request_id": "sample string 23",
  "branch_id": 24,
  "from_date": "sample string 25",
  "to_date": "sample string 26",
  "otp": "sample string 27",
  "total_net_amount": "sample string 28",
  "discount_amount": "sample string 29",
  "patient_name": "sample string 30"
}