diff --git a/grmi/Entity.go b/grmi/Entity.go
index 868269f..b87f7c2 100644
--- a/grmi/Entity.go
+++ b/grmi/Entity.go
@@ -5,8 +5,9 @@ type Entity struct {
 	BuildCursor  func() interface{}
 	Indicator    interface{}
 	FieldMapping map[string]Field
+	PresetKeys   []string
 }
 
-func NewEntity(tableName string, buildCursor func() interface{}, fieldMapping map[string]Field) Entity {
-	return Entity{tableName, buildCursor, buildCursor(), fieldMapping}
+func NewEntity(tableName string, buildCursor func() interface{}, fieldMapping map[string]Field, presetKeys []string) Entity {
+	return Entity{tableName, buildCursor, buildCursor(), fieldMapping, presetKeys}
 }