https://api.sciener.com/v3/lock/unlock
Unlock via gateway, if get -4043(The function is not supported for this lock) error message, please switch the "remote unlock" on in Sciener APP's lock setting page.

Name	Type	Required	Description
clientId	String	Y	The app_id which is assigned by system when you create an application
accessToken	String	Y	Access token
lockId	Int	Y	Lock ID
date	Long	Y	Current time (timestamp in millisecond)

Parameter	Type	Description
errcode	Int	Error code
errmsg	String	Error message

{
    "errcode": 0, 
    "errmsg": "none error message",
    "description": "none error message or means yes"
}