Try to parse json uri encoded strings in inputs

source/app/metrics/metadata.mjs

@@ -145,10 +145,15 @@ metadata.plugin = async function({__plugins, name, logger}) {
                   try {
                     value = JSON.parse(value)
                   }
+                  catch {
+                    try {
+                      value = JSON.parse(decodeURIComponent(value))
+                    }
                     catch {
                       logger(`metrics/inputs > failed to parse json : ${value}`)
                       value = JSON.parse(defaulted)
                     }
+                  }
                   return value
                 }
                 //Token