Good afternoon, I am trying to mock a grpc service in the standalone version of wiremock, but there seems to be something going wrong with the response encoding. This is my mapper:

{
  "name": "aanroep splunk geeft 200 OK",
  "priority": 5,
  "request": {
    "urlPath": "/nl.bkwi.audit.log.grpc.v0100.AuditLog_v0100Service/AuditLogRequest",
    "method": "POST"
  },
  "response": {
    "status": 200,
    "headers": {
      "content-type": "application/grpc",
      "grpc-status-name": "OK"
    },
    "body": "{\"message\": \"hi\"}",
    "transformers": [
      "response-template"
    ]
  }
}