Code cleanup

Signed-off-by: Yuan Si <do4suki@gmail.com>

model/tos.go

@@ -0,0 +1,16 @@
+package model
+
+// TosResp ...
+type TosResp struct {
+	ResponseData TosRes        `json:"response_data"`
+	ReleaseInfo  []interface{} `json:"release_info"`
+	StatusCode   int           `json:"status_code"`
+}
+
+// TosResp ...
+type TosRes struct {
+	TosID           int   `json:"tos_id"`
+	TosType         int   `json:"tos_type"`
+	IsAgreed        bool  `json:"is_agreed"`
+	ServerTimestamp int64 `json:"server_timestamp"`
+}