api.v1alpha1.integrations.CalculateFeesReq(CalculateFeesReq)

{
    "fees": [
        {
            "flat": {
                "currency_code": "string",
                "units": 0,
                "nanos": 0
            }
        }
    ],
    "params": {
        "property1": {
            "bool_val": true
        },
        "property2": {
            "bool_val": true
        }
    },
    "call_sid": 0,
    "call_type": "INBOUND",
    "request_origin": "REQUEST_ORIGIN_UNKNOWN"
}