fix: OTLP JSON Event example body

[IgorPidik]

What

• fix events.json example by wrapping kvlistValue content in a values property
• fix indentation

Why

Following the example README and running

$ curl -X POST -H "Content-Type: application/json" -d @events.json -i localhost:4318/v1/logs

results in

HTTP/1.1 400 Bad Request
Content-Type: application/json
Vary: Origin
Date: Sat, 31 May 2025 13:29:10 GMT
Content-Length: 253

{"code":3,"message":"ReadObjectCB: expect { or n, but found [, error found in #10 byte of ...|tValue\": [          |..., bigger context ...|         \"body\": {                \"kvlistValue\": [                  {                    \"key\": \"typ|..."}%

Seems like the kvlistValue(KeyValueList) values need to be wrapped in a values property.

After fixing the example the request response and collector output seem fine:

HTTP/1.1 200 OK
Content-Type: application/json
Vary: Origin
Date: Sat, 31 May 2025 12:31:00 GMT
Content-Length: 21

{"partialSuccess":{}}

collector output:

collector-otel-collector-1  | 2025-05-31T13:29:24.995Z  info    Logs    {"resource": {}, "otelcol.component.id": "debug", "otelcol.component.kind": "exporter", "otelcol.signal": "logs", "resource logs": 1, "log records": 1}
collector-otel-collector-1  | 2025-05-31T13:29:24.996Z  info    ResourceLog #0
collector-otel-collector-1  | Resource SchemaURL:
collector-otel-collector-1  | Resource attributes:
collector-otel-collector-1  |      -> service.name: Str(my.service)
collector-otel-collector-1  | ScopeLogs #0
collector-otel-collector-1  | ScopeLogs SchemaURL:
collector-otel-collector-1  | InstrumentationScope my.library 1.0.0
collector-otel-collector-1  | InstrumentationScope attributes:
collector-otel-collector-1  |      -> my.scope.attribute: Str(some scope attribute)
collector-otel-collector-1  | LogRecord #0
collector-otel-collector-1  | ObservedTimestamp: 2018-12-13 14:51:00.3 +0000 UTC
collector-otel-collector-1  | Timestamp: 2018-12-13 14:51:00.3 +0000 UTC
collector-otel-collector-1  | SeverityText:
collector-otel-collector-1  | SeverityNumber: Info(9)
collector-otel-collector-1  | Body: Map({"referrer":"https://wwww.google.com","title":"Free Online GUID Generator","type":0,"url":"https://www.guidgenerator.com/online-guid-generator.aspx"})
collector-otel-collector-1  | Attributes:
collector-otel-collector-1  |      -> event.name: Str(browser.page_view)
collector-otel-collector-1  | Trace ID:
collector-otel-collector-1  | Span ID:
collector-otel-collector-1  | Flags: 0
collector-otel-collector-1  |   {"resource": {}, "otelcol.component.id": "debug", "otelcol.component.kind": "exporter", "otelcol.signal": "logs"}

Tested using docker image otel/opentelemetry-collector-contrib:0.127.0

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: IgorPidik / name: Igor Pidik (df49074, b586e42)
• ✅ login: reyang / name: Reiley Yang (a2bbb1e)