Get Balance Monitor

curl --request GET \
  --url http://localhost:5001/balance-monitors/{id}

{
  "monitor_id": "mon_e0e77b0c-4985-472a-9bf5-76a48b0259b0",
  "balance_id": "bln_0be360ca-86fe-457d-be43-daa3f966d8f0",
  "condition": {
    "field": "debit_balance",
    "operator": ">",
    "value": 100000
  },
  "description": "",
  "call_back_url": "https://api.myapp.com/balancemonitor",
  "created_at": "2024-02-20T05:56:58.257315Z"
}