request(
    "POST",
    "/v1/custody/staking_unstake/",
    {
        "product_id": 2751
        "amount": 4000000000
    },
    api_key, api_secret, host
)

coboFetch('POST', '/v1/custody/staking_unstake/',
        {
            "product_id": 2751
            "amount": 4000000000
        },
        api_key, api_secret, host
    ).then(res => {
        res.json().then((data)=>{
            console.log(JSON.stringify(data, null, 4));
        })
    }).catch(err => {
        console.log(err)
    });

Request("POST", "/v1/custody/staking_unstake/", map[string]string{
    "product_id": 2751
    "amount": 4000000000
})

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