curl --request POST \
  --url https://api.sandbox.co.in/gst/compliance/e-way-bill/tax-payer/gstin/search \
  --header 'Content-Type: application/json' \
  --header 'authorization: <authorization>' \
  --header 'x-api-key: <x-api-key>' \
  --data '
{
  "gstin": "29AAACQ3770E000"
}
'

{
  "code": 200,
  "data": {
    "data": {
      "address1": "",
      "address2": "560009",
      "blkStatus": "",
      "gstin": "29AAACQ3770E000",
      "legalName": "Acme Industries Private Limited",
      "pinCode": "560009",
      "stateCode": "27",
      "status": "ACT",
      "tradeName": "",
      "txpType": "REG"
    },
    "status": "1"
  },
  "timestamp": 1763446641000,
  "transaction_id": "c882b9b8-08c4-4bb7-b0aa-9f61ef6c4d21"
}