request(
    "POST",
    "/v1/custody/guard/change_binding/",
    {
        "user_id": "cobo_168108513539918"
    },
    api_key, api_secret, host
)

coboFetch('POST', '/v1/custody/guard/change_binding/',
        {
           "user_id": "cobo_168108513539918"
        },
        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/guard/change_binding/", map[string]string{
    "user_id": "cobo_168108513539918"
})

{
  "success": true,
  "result": {
    "binder_id": "Ph8YP+LTQyqcfHE/A+eXUw=="
  }
}