Service Enhancement

[nvnamsss]

Rework the data structure for service due to this is not optimized. Currently, the redundant data is too much and could cause negative to network

So the expectation is:

• The data structure is clear
• The redundant data is as least as possible
• There is no conflict in code due to data structure

[nvnamsss]

struct:

• Response: Response representing the data for a response
• Status - bool : determine request is success or not
• Message - string : description for an issue or state of response

method:

• Error(err error) : Error validate the data of response by err.