How to use RestSharp Api

Hi

  I have below data . How it can be done using RestSharp

  Url : my.gstzen.in/~gstzen/a/post-einvoice-data/einvoice-json/

  Headers :

  Gstin : asasasa

  Token :  adusjaudajdsjad

  Below is the payload. 

{
  "Version": "1.1",
  "TranDtls": {
    "TaxSch": "GST",
    "SupTyp": "B2B",
    "RegRev": "N",
    "IgstOnIntra": "N"
  },
  "DocDtls": {
    "Typ": "INV",
    "No": "23-24/DEM/154",
    "Dt": "12/08/2024"
  },
  "SellerDtls": {
    "Gstin": "29AADCG4992P1ZP",
    "LglNm": "GSTZEN DEMO PRIVATE LIMITED",
    "Addr1": "Manyata Tech Park",
    "Loc": "BANGALORE",
    "Pin": 560077,
    "Stcd": "29"
  },
  "BuyerDtls": {
    "Gstin": "06AAMCS8709B1ZA",
    "LglNm": "Quality Products Private Limited",
    "Pos": "06",
    "Addr1": "133, Mahatma Gandhi Road",
    "Loc": "HARYANA",
    "Pin": 121009,
    "Stcd": "06"
  },
  "DispDtls": {
    "Nm": "Maharashtra Storage",
    "Addr1": "133, Mahatma Gandhi Road",
    "Loc": "Bhiwandi",
    "Pin": 400001,
    "Stcd": "27"
  },
  "ShipDtls": {
    "Gstin": "URP",
    "LglNm": "Quality Products Construction Site",
    "Addr1": "Anna Salai",
    "Loc": "Chennai",
    "Pin": 600001,
    "Stcd": "33"
  },
  "ItemList": [
    {
      "ItemNo": 0,
      "SlNo": "1",
      "IsServc": "N",
      "PrdDesc": "Computer Hardware - Keyboard and Mouse",
      "HsnCd": "320504",
      "Qty": 25,
      "FreeQty": 0,
      "Unit": "PCS",
      "UnitPrice": 200,
      "TotAmt": 5000,
      "Discount": 0,
      "PreTaxVal": 0,
      "AssAmt": 5000,
      "GstRt": 18,
      "IgstAmt": 900,
      "CgstAmt": 0,
      "SgstAmt": 0,
      "CesRt": 0,
      "CesAmt": 0,
      "CesNonAdvlAmt": 0,
      "StateCesRt": 0,
      "StateCesAmt": 0,
      "StateCesNonAdvlAmt": 0,
      "OthChrg": 0,
      "TotItemVal": 5900
    }
  ],
  "ValDtls": {
    "AssVal": 5000,
    "CgstVal": 0,
    "SgstVal": 0,
    "IgstVal": 900,
    "CesVal": 0,
    "StCesVal": 0,
    "Discount": 0,
    "OthChrg": 0,
    "RndOffAmt": 0,
    "TotInvVal": 5900
  }
}

Thanks