Representing an object of objects in json-ld

Hi all

I'm in need of some advice for this structure of json as below. How can
this be represented in json-ld? It's an object of objects.

...... id / context / name etc
"values": {
"12": {
"46": 0.17
},
"13": {
"0": 0,
"30": 0
}
}
....

Where the key is always an integer but the value could be an integer or
string.

Thanks,
- Ashley