curl --request POST \
  --url https://toncenter.com/api/v3/estimateFee \
  --header 'Content-Type: application/json' \
  --data '
{
  "address": "<string>",
  "body": "<string>",
  "ignore_chksig": true,
  "init_code": "<string>",
  "init_data": "<string>"
}
'

{
  "destination_fees": [
    {
      "fwd_fee": 123,
      "gas_fee": 123,
      "in_fwd_fee": 123,
      "storage_fee": 123
    }
  ],
  "source_fees": {
    "fwd_fee": 123,
    "gas_fee": 123,
    "in_fwd_fee": 123,
    "storage_fee": 123
  }
}

{
  "code": 123,
  "error": "<string>"
}