curl --request POST \
  --url https://api.sandbox.co.in/gst/compliance/public/gstrs/preference \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <x-api-key>' \
  --data '
{
  "gstin": "27ABCDE1234F1Z5"
}
'

{
  "code": 200,
  "timestamp": 1775825033134,
  "data": {
    "data": {
      "response": [
        {
          "preference": "M",
          "quarter": "Q1"
        },
        {
          "preference": "M",
          "quarter": "Q2"
        },
        {
          "preference": "M",
          "quarter": "Q3"
        },
        {
          "preference": "M",
          "quarter": "Q4"
        }
      ]
    },
    "status_cd": "1"
  },
  "transaction_id": "903962ca-bc29-45c5-b879-3e51c7f9887d"
}