Get User by External ID

{
  "id": "usr_01KKSMB47VYGW97GFE67VGDK7M",
  "name": "John Doe",
  "external_id": "ext_abc123",
  "emails": [
    {
      "id": "uem_01KKSMB47VYGW97GFE67VGDK7M",
      "email": "user@example.com",
      "is_default": true
    }
  ],
  "addresses": [
    {
      "id": "uad_01KKSMB47VYGW97GFE67VGDK7M",
      "recipient_name": "string",
      "address_line_1": "string",
      "address_line_2": "string",
      "city": "string",
      "administrative_area": "string",
      "postal_code": "string",
      "country_code": "string",
      "is_default": true
    }
  ],
  "phones": [
    {
      "id": "uph_01KKSMB47VYGW97GFE67VGDK7M",
      "number": "string",
      "country_code": "string",
      "is_default": true
    }
  ],
  "subscriptions": [
    {
      "id": "string",
      "user_ids": [
        "string"
      ],
      "status": "trialing",
      "product": {
        "product_id": "string",
        "start": {
          "start_type": "auto"
        },
        "recurring": {
          "recurring_type": "never"
        },
        "expiry": {
          "expiry_type": "never"
        },
        "trial": {
          "interval": "week",
          "interval_count": 7
        },
        "price": {
          "price_type": "fixed",
          "price_id": "string",
          "amount": 0,
          "currency": "string"
        },
        "benefit_schedules": [
          {
            "recurring": {
              "recurring_type": "never"
            },
            "expiry": {
              "expiry_type": "never"
            },
            "benefit_grants": [
              {
                "benefit_id": "string",
                "value_initial": 0,
                "expiry": {
                  "expiry_type": "never"
                }
              }
            ]
          }
        ]
      },
      "trial_starts_at": {},
      "trial_ends_at": {},
      "current_period_starts_at": {},
      "current_period_ends_at": {},
      "starts_at": null,
      "expires_at": {},
      "benefit_schedules": [
        "string"
      ],
      "state_transitions": {
        "trialing_at": {},
        "pending_at": {},
        "active_at": {},
        "past_due_at": {},
        "canceled_at": {},
        "expired_at": {},
        "paused_at": {}
      },
      "next_update": {
        "updates_at": null,
        "update_type": "activates"
      },
      "invoices": [
        {
          "id": "string",
          "invoice_number": "INV-550",
          "user_ids": [
            "string"
          ],
          "status": "open",
          "due_at": null,
          "amount_original": 0,
          "amount_due": 0,
          "currency": "string",
          "subscription": {
            "subscription_id": "string",
            "period_starts_at": null,
            "period_ends_at": {}
          },
          "state_transitions": {
            "opened_at": {},
            "past_due_at": {},
            "paid_at": {},
            "voided_at": {}
          },
          "next_update": {
            "updates_at": null,
            "update_type": "past_due"
          },
          "created_at": null,
          "updated_at": null
        }
      ],
      "created_at": null,
      "updated_at": null
    }
  ],
  "user_group_ids": [
    "string"
  ],
  "custom_fields": {},
  "created_at": null,
  "updated_at": null
}

{
  "detail": [
    {
      "loc": [
        "string"
      ],
      "msg": "string",
      "type": "string",
      "input": null,
      "ctx": {}
    }
  ]
}