How to parse JSON metrics array in Splunk - splunk

Question

I receive JSON from API in the following format:
[
{
"scId": "000DD2",
"sensorId": 2,
"metrics": [
{
"s": 5414,
"dateTime": "2018-02-02T13:03:30+01:00"
},
{
"s": 5526,
"dateTime": "2018-02-02T13:04:56+01:00"
},
{
"s": 5631,
"dateTime": "2018-02-02T13:06:22+01:00"
}
}, .... ]
Currently trying to display these metrics on the linear chart with dateTime for the X-axis and "s" for Y.
I use the following search query:
index="main" source="rest://test3" | spath input=metrics{}.s| mvexpand metrics{}.s
| mvexpand metrics{}.dateTime | rename metrics{}.s as s
| rename metrics{}.dateTime as dateTime| table s,dateTime
And I receive the data in the following format which is not applicable for linear chart. The point is - how to correctly parse the JSON to apply date-time from dateTime field in JSON to _time in Splunk.
Query results

Answer 1

#Max Zhylochkin,
Can you please try following search?
index="main" source="rest://test3"
| spath input=metrics{}.s
| mvexpand metrics{}.s
| mvexpand metrics{}.dateTime
| rename metrics{}.s as s
| rename metrics{}.dateTime as dateTime
| table s,dateTime
| eval _time = strptime(dateTime,"%Y-%m-%dT%H:%M:%S.%3N")
Thanks