curl --request GET \
  --url https://api.metronome.com/v1/customers/{customer_id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "d7abd0cd-4ae9-4db7-8676-e986a4ebd8dc",
    "created_at": "2024-01-01T00:00:00.000Z",
    "external_id": "team@example.com",
    "ingest_aliases": [
      "team@example.com"
    ],
    "name": "Example, Inc.",
    "customer_config": {
      "salesforce_account_id": "0015500001WO1ZiABL"
    },
    "custom_fields": {
      "x_account_id": "KyVnHhSBWl7eY2bl"
    }
  }
}