parse actions json into structs

internal/config.go

@@ -1,6 +1,9 @@
 package internal
 
-import "fmt"
+import (
+	"encoding/json"
+	"fmt"
+)
 
 type OptionMissingError struct {
 	OptionName string
@@ -10,12 +13,10 @@ func (o OptionMissingError) Error() string {
 	return fmt.Sprintf("Error during config parsing: option %s could not be parsed.", o.OptionName)
 }
 
-type Options map[string]interface{}
-
 type ActionConfig struct {
-	Type    string  `json:"type"`
-	Options Options `json:"options"`
-	Stage   int     `json:"stage"`
+	Type    string          `json:"type"`
+	Options json.RawMessage `json:"options"`
+	Stage   int             `json:"stage"`
 }
 
 type KillSwitchConfig struct {