How to parse dynamic array json through logstash?

Elastic Stack Logstash
1

Here is my array json.
"service_lines": [
{
"id": 584942,
"is_approved": null,
"aar": {
"category": {
"id": 42,
"name": "Tires"
},
"system": {
"id": 1,
"name": "Tire"
},
"subsystem": {
"id": 1,
"name": "Tire"
},
"service": {
"id": 53,
"name": "Service Call - Tire"
}
},
"vmrs": null
}
]
These array type json is inside a nested json and I'm getting this data dynamically. Like sometimes i may get 4-5 arrays or even upto 10. I tried splitting the field, but nothing works well. Is there any way I can parse the data?
Any suggestion is appreciated. Thanks much.

2

A json filter will parse arrays inside JSON objects. What do you not like about the result?