Parsing Object with Quotes into Array

ddc9772

My frontend is providing me with this:

{
"2": {
"domEvent": {}
"value": [
3,
4,
5
]
}
"3": {
"domEvent": {}
"value": [
7,
10,
11
]
}
}

I'm trying to get the values as a list. What sequence of filters would I need to use to transform this into an integer list / array of [3, 4, 5, 7, 10, 11]? These are coming from a sidebar filter and the values are tags used to filter a collection.

I've tried a variety of solutions but am getting stuck.

Thank you.