feat: implement advanced subscription changes POST request

bruno/Subscriptions API/Upload subscription changes for device.bru

@@ -0,0 +1,16 @@
+meta {
+  name: Upload subscription changes for device
+  type: http
+  seq: 4
+}
+
+get {
+  url: http://localhost:8080/api/2/subscriptions/:username/:device_id
+  body: none
+  auth: none
+}
+
+params:path {
+  username: 
+  device_id: 
+}

bruno/Subscriptions API/Upload subscriptions for device.bru

@@ -21,5 +21,5 @@ auth:basic {
 }
 
 body:json {
-  ["https://example1.com", "https://example2.com"]
+  ["https://example2.com", "testing"]
 }