curl --request GET \
  --url https://api.withorb.com/v1/credit_blocks/{block_id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "balance": 123,
  "effective_date": "2023-11-07T05:31:56Z",
  "expiry_date": "2023-11-07T05:31:56Z",
  "per_unit_cost_basis": "<string>",
  "status": "active",
  "maximum_initial_balance": 123,
  "filters": [
    {
      "field": "price_id",
      "operator": "includes",
      "values": [
        "<string>"
      ]
    }
  ]
}