Wrong JSON output escaping

[kvolkovich-sc]

I noticed that fluent-bit's json parser can't parse some of eventrouter's log messages.

Eventrouter config

{
  "sink": "stdout"
}

Eventrouter stdout sample

{"verb":"UPDATED","event":{"metadata":{"name":"fluent-bit-txzvr.1577e0b2a83a3735","namespace":"lunar-system","selfLink":"/api/v1/namespaces/lunar-system/events/fluent-bit-txzvr.1577e0b2a83a3735","uid":"fe6eb861-157c-11e9-a342-5aae0cc8125e","resourceVersion":"23100854","creationTimestamp":"2019-01-11T08:43:40Z"},"involvedObject":{"kind":"Pod","namespace":"lunar-system","name":"fluent-bit-txzvr","uid":"7fc47232-1344-11e9-b82e-663e4d499873","apiVersion":"v1","resourceVersion":"22351098","fieldPath":"spec.containers{fluent-bit}"},"reason":"Pulling","message":"pulling image "fluent/fluent-bit:1.0.1"","source":{"component":"kubelet","host":"aks-nodepool1-30459648-3"},"firstTimestamp":"2019-01-08T12:54:14Z","lastTimestamp":"2019-01-11T08:43:40Z","count":6,"type":"Normal"},"old_event":{"metadata":{"name":"fluent-bit-txzvr.1577e0b2a83a3735","namespace":"lunar-system","selfLink":"/api/v1/namespaces/lunar-system/events/fluent-bit-txzvr.1577e0b2a83a3735","uid":"fe6eb861-157c-11e9-a342-5aae0cc8125e","resourceVersion":"23100854","creationTimestamp":"2019-01-11T08:43:40Z"},"involvedObject":{"kind":"Pod","namespace":"lunar-system","name":"fluent-bit-txzvr","uid":"7fc47232-1344-11e9-b82e-663e4d499873","apiVersion":"v1","resourceVersion":"22351098","fieldPath":"spec.containers{fluent-bit}"},"reason":"Pulling","message":"pulling image "fluent/fluent-bit:1.0.1"","source":{"component":"kubelet","host":"aks-nodepool1-30459648-3"},"firstTimestamp":"2019-01-08T12:54:14Z","lastTimestamp":"2019-01-11T08:43:40Z","count":6,"type":"Normal"}}

If I try to parse it, I got this

[e11it]

glogsink has the same issue.