request(
    "GET",
    "/v1/custody/mpc/is_valid_address/",
    {
        "coin": "ETH",
        "address": "0x9414933Ff7777bb28cA22D15c178596A6e58d957"
    },
    api_key, api_secret, host
)

coboFetch('GET', '/v1/custody/mpc/is_valid_address/', {
    "coin": "ETH",
    "address": "0x9414933Ff7777bb28cA22D15c178596A6e58d957"
}, api_key, api_secret, host)
    .then(res => {
        res.json().then((data)=>{
            console.log(JSON.stringify(data, null, 4));
        })
    }).catch(err => {
        console.log(err)
    });

Request("GET", "/v1/custody/mpc/is_valid_address/", map[string]string{
    "coin": "ETH",
    "address": "0x9414933Ff7777bb28cA22D15c178596A6e58d957"
})

{
"success": true,
"result": false
}