Web Scenarios with JSON output

[titansmc]

I have a URL that gives me a JSON output but when pasting this output into "Required string" I am getting :

Step "Healthcheck" [1 of 1] failed: required pattern "{"Test-Search":{"healthy":false},"DB":{"healthy":true},"D IS":{"healthy":true},"DMS":{"healthy":true}}" was not found on https://test.sfd.as/converis/metrics/healthcheck

Isn't it possible to parse?

I am running Zabbix 3.0.3

Thanks.