We have a javascript that sends the following format of JSON into the Pega function ParseJSON:

prop1: "12345"
prop2: "TEST"
prop3: "TEST"
prop4: "(123) 456-7890"
prop 5: "111 MAIN ST , CITY, STATE 12345-6789"
prop6: "FIRST LAST"
pid: "PREFIX-12345"
__proto__: Object

What we get back in Pega 7.2 is: {"isSucess":true}

In Pega 7.4 we get back: eyJpc1N1Y2Nlc3MiOnRydWV9. This invalid response causes problems for us.

Since the upgrade we checked if encoding changed. It is still set to UTF-8 on the JVM.

Can anyone think of why this might be happening to us?