regions:
  us-central:
    - subcription-a:
      - rg-1: [option-b: "valueb"]
      - rg-2: [option-c1: "valuec1", option-c2: "valuec2" ]
  us-west:
    - subcription-b:
      - rg-1: [option-b: "valueb"]
      - rg-2: [option-c1: "valuec1", option-c2: "valuec2" ]