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)
});