curl --request POST \
     --url https://api.sandbox.co.in/ewb/tax-payer/seller/bills \
     --header 'Authorization: xxxxxxxxxx' \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --header 'x-api-key: xxxxxxxxxx' \
     --header 'x-api-version: 1.0' \
     --data '
{
  "Raw Body": {
    "supplyType": "O",
    "subSupplyType": "1",
    "subSupplyDesc": "",
    "docType": "INV",
    "docNo": "7001-8",
    "docDate": "15/12/2017",
    "fromGstin": "29AKLPM8755F1Z2",
    "fromTrdName": "welton",
    "fromAddr1": "2ND CROSS NO 59  19  A",
    "fromAddr2": "GROUND FLOOR OSBORNE ROAD",
    "fromPlace": "FRAZER TOWN",
    "fromPincode": 560090,
    "actFromStateCode": 29,
    "fromStateCode": 29,
    "toGstin": "02EHFPS5910D2Z0",
    "toTrdName": "sthuthya",
    "toAddr1": "Shree Nilaya",
    "toAddr2": "Dasarahosahalli",
    "toPlace": "Beml Nagar",
    "toPincode": 560090,
    "actToStateCode": 29,
    "toStateCode": 27,
    "transactionType": 4,
    "otherValue": "-100",
    "totalValue": 56099,
    "cgstValue": 0,
    "sgstValue": 0,
    "igstValue": 300.67,
    "cessValue": 400.56,
    "cessNonAdvolValue": 400,
    "totInvValue": 68358,
    "transporterId": "",
    "transporterName": "",
    "transDocNo": "",
    "transMode": "1",
    "transDistance": "100",
    "transDocDate": "",
    "vehicleNo": "PVC1234",
    "vehicleType": "R",
    "itemList": [
      {
        "productName": "Wheat",
        "productDesc": "Wheat",
        "hsnCode": 1001,
        "quantity": 4,
        "qtyUnit": "BOX",
        "cgstRate": 0,
        "sgstRate": 0,
        "igstRate": 3,
        "cessRate": 3,
        "cessNonadvol": 0,
        "taxableAmount": 5609889
      }
    ]
  }
}
'