curl --request GET \
  --url https://dashboard.hologram.io/api/1/plans/{planId} \
  --header 'Authorization: Basic <encoded-value>'

{
  "success": true,
  "data": {
    "id": 2096,
    "partnerid": 1,
    "name": "Global G3 Standard Flat Rate",
    "description": "G3 Standard Global flat-rate PayGo",
    "data": 0,
    "recurring": 1,
    "enabled": 1,
    "billingperiod": 1,
    "groupid": 1199,
    "developerplan": 0,
    "display_category": "standard",
    "cellular_coverage_region_id": 6,
    "use_variable_rates": false,
    "is_dynamic_pool": false,
    "tiers": {
      "BASE": {
        "devicecount": 0,
        "zones": {
          "global": {
            "amount": "1.000000",
            "sms": "0.190000",
            "overage": "0.030000",
            "carriers": {
              "13": {
                "apn": "hologram"
              }
            }
          }
        }
      }
    },
    "cellular_coverage_region": {
      "id": 6,
      "display_name": "Global – G3 SIMs",
      "description": "Lowest-cost global coverage for G3 standalone SIMs"
    },
    "profiles": [
      {
        "offerId": 136,
        "carrierId": 13,
        "name": "Global-3"
      }
    ]
  }
}