curl --request GET \
  --url https://api.sandbox.isometric.com/registry/v0/organisations/{id}/credit_balance \
  --header 'Authorization: Bearer <token>' \
  --header 'x-client-secret: <x-client-secret>'

{
  "project_balances": [
    {
      "project_id": "prj_1CTWZQGKE1S0VAXA",
      "total": {
        "active_credits_total": {
          "credit_kgs": 123,
          "credits": 123
        },
        "retired_credits_total": {
          "credit_kgs": 123,
          "credits": 123
        }
      }
    }
  ],
  "supplier_balances": [
    {
      "supplier_id": "spl_1CC712KFS1S0YKPS",
      "total": {
        "active_credits_total": {
          "credit_kgs": 123,
          "credits": 123
        },
        "retired_credits_total": {
          "credit_kgs": 123,
          "credits": 123
        }
      }
    }
  ],
  "total": {
    "active_credits_total": {
      "credit_kgs": 123,
      "credits": 123
    },
    "retired_credits_total": {
      "credit_kgs": 123,
      "credits": 123
    }
  }
}