The handover to CXone Studio fails with a 400 error when I pass the Cognigy context via the SetSessionVariable action. I’m sending the JSON payload directly in the value field but the Studio flow throws a generic ‘invalid parameter’ error. Here is the snippet I’m using: SetSessionVariable(variableName: 'CognigyContext', value: '{"lastIntent": "book_flight"}');. Is there a specific encoding requirement for the context object that I’m missing?