curl --request GET \
  --url https://api.example.com/api/utility/checkApprove

{
  "needApprove": true,
  "message": "<string>",
  "transaction": {
    "approvalAddress": "<string>",
    "permit2Address": "<string>",
    "data": "<string>",
    "to": "<string>",
    "value": "<string>",
    "depositAddress": "<string>",
    "amountToSend": "<string>",
    "extraFields": {},
    "exchangeId": "<string>",
    "tonMessages": [
      {
        "address": "<string>",
        "amount": "<string>",
        "payload": "<string>",
        "stateInit": "<string>"
      }
    ],
    "psbt": "<string>",
    "signInputs": [
      123
    ],
    "feeLimit": 123,
    "callValue": "<string>",
    "signature": "<string>",
    "arguments": [
      "<string>"
    ],
    "rawParameter": "<string>",
    "transaction": "<string>"
  }
}