ocr: Test Entity Change Signaling Entity 1 Register UnRegister Signal 3 Entity 2 Register UnRegister Signal 5 Entity 3 Benister UnRegister Signal 2 Close. Test Entity Change Signaling Entity: 1 Register UnRegister Signal 3 Entity 2: Begster UnRegister Signal J Entity: 3 Register UnRegister Signal 2 Close Test Entity Change Signaling Entity: 1 Register UnRegister Signal 3 Entity 2 Register UnRegister Signal a Entity 3 Register UnRegister Signal 2 Close