From what I can tell it looks like you have an array of objects and within that object is a sub array ("subActs"). To be able to iterate over all the objects in the "subActs" array you need to iterate over it this way:
jsonObject.forEach(function(object) {
object.subActs.forEach(function(subObject) {
console.log(subObject);
});
});
This will iterate through the entire object and just print to the console the subActs array objects.
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