JSON response handling incompatible with go-kit transport layer

[francescobianco]

JSON response handling incompatible with go-kit transport layer

Description
SDK returns raw string instead of structured response, making integration with go-kit harder.

Code snippet

resp, err := apiClient.Request(ctx, "GET", baseURL, "/advance", nil, nil)

var data map[string]interface{}
json.Unmarshal([]byte(resp), &data)

Issue
Extra boilerplate required; expected []byte or structured response.