import json
import re

s = """new APIData([
  new APIControllers([
    new APIProp({name:"durable-id",value:"controller_a"}),
    new APIProp({name:"controller-id",value:"A"}),
    new APIProp({name:"controller-id-numeric",value:"1"}),
    new APIProp({name:"serial-number",value:"CN8415M489"})
  ])
])"""

s2 = re.sub("new API[A-Za-z]+", "", s)
s3 = s2.replace('(', '')
s4 = s3.replace(')', '')

s5 = re.sub("([a-z]+):", r'"\1":', s4)
ret = json.loads(s5)
print(ret)