curl --request POST \
  --url https://us.api.flexprice.io/v1/wallets/{id}/top-up \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "transaction_reason": "INVOICE_PAYMENT",
  "amount": "<string>",
  "credits_to_add": "<string>",
  "description": "<string>",
  "expiry_date_utc": "<string>",
  "idempotency_key": "<string>",
  "metadata": {},
  "priority": 123
}
'

{
  "invoice_id": "<string>",
  "wallet": {
    "alert_settings": {
      "alert_enabled": true,
      "critical": {
        "condition": "above",
        "threshold": 123
      },
      "info": {
        "condition": "above",
        "threshold": 123
      },
      "warning": {
        "condition": "above",
        "threshold": 123
      }
    },
    "alert_state": "ok",
    "auto_topup": {
      "amount": 123,
      "enabled": true,
      "invoicing": true,
      "threshold": 123
    },
    "balance": "<string>",
    "config": {
      "allowed_price_types": [
        "ALL"
      ]
    },
    "conversion_rate": "<string>",
    "created_at": "<string>",
    "created_by": "<string>",
    "credit_balance": "<string>",
    "credits_available_breakdown": {
      "free": "<string>",
      "purchased": "<string>"
    },
    "currency": "<string>",
    "customer_id": "<string>",
    "description": "<string>",
    "environment_id": "<string>",
    "id": "<string>",
    "metadata": {},
    "name": "<string>",
    "status": "published",
    "tenant_id": "<string>",
    "topup_conversion_rate": "<string>",
    "updated_at": "<string>",
    "updated_by": "<string>",
    "wallet_status": "active",
    "wallet_type": "PRE_PAID"
  },
  "wallet_transaction": {
    "amount": "<string>",
    "conversion_rate": "<string>",
    "created_at": "<string>",
    "created_by": "<string>",
    "created_by_user": {
      "email": "<string>",
      "id": "<string>",
      "roles": [
        "<string>"
      ],
      "tenant": {
        "billing_details": {
          "address": {
            "address_city": "<string>",
            "address_country": "<string>",
            "address_line1": "<string>",
            "address_line2": "<string>",
            "address_postal_code": "<string>",
            "address_state": "<string>"
          },
          "email": "<string>",
          "help_email": "<string>",
          "phone": "<string>"
        },
        "created_at": "<string>",
        "id": "<string>",
        "metadata": {},
        "name": "<string>",
        "status": "<string>",
        "updated_at": "<string>"
      },
      "type": "user"
    },
    "credit_amount": "<string>",
    "credit_balance_after": "<string>",
    "credit_balance_before": "<string>",
    "credits_available": "<string>",
    "currency": "<string>",
    "customer": {
      "address_city": "<string>",
      "address_country": "<string>",
      "address_line1": "<string>",
      "address_line2": "<string>",
      "address_postal_code": "<string>",
      "address_state": "<string>",
      "created_at": "<string>",
      "created_by": "<string>",
      "email": "<string>",
      "environment_id": "<string>",
      "external_id": "<string>",
      "id": "<string>",
      "metadata": {},
      "name": "<string>",
      "parent_customer": "<unknown>",
      "parent_customer_id": "<string>",
      "status": "published",
      "tenant_id": "<string>",
      "updated_at": "<string>",
      "updated_by": "<string>"
    },
    "customer_id": "<string>",
    "description": "<string>",
    "environment_id": "<string>",
    "expiry_date": "<string>",
    "id": "<string>",
    "idempotency_key": "<string>",
    "metadata": {},
    "priority": 123,
    "reference_id": "<string>",
    "reference_type": "PAYMENT",
    "status": "published",
    "tenant_id": "<string>",
    "topup_conversion_rate": "<string>",
    "transaction_reason": "INVOICE_PAYMENT",
    "transaction_status": "pending",
    "type": "credit",
    "updated_at": "<string>",
    "updated_by": "<string>",
    "wallet": {
      "alert_settings": {
        "alert_enabled": true,
        "critical": {
          "condition": "above",
          "threshold": 123
        },
        "info": {
          "condition": "above",
          "threshold": 123
        },
        "warning": {
          "condition": "above",
          "threshold": 123
        }
      },
      "alert_state": "ok",
      "auto_topup": {
        "amount": 123,
        "enabled": true,
        "invoicing": true,
        "threshold": 123
      },
      "balance": "<string>",
      "config": {
        "allowed_price_types": [
          "ALL"
        ]
      },
      "conversion_rate": "<string>",
      "created_at": "<string>",
      "created_by": "<string>",
      "credit_balance": "<string>",
      "credits_available_breakdown": {
        "free": "<string>",
        "purchased": "<string>"
      },
      "currency": "<string>",
      "customer_id": "<string>",
      "description": "<string>",
      "environment_id": "<string>",
      "id": "<string>",
      "metadata": {},
      "name": "<string>",
      "status": "published",
      "tenant_id": "<string>",
      "topup_conversion_rate": "<string>",
      "updated_at": "<string>",
      "updated_by": "<string>",
      "wallet_status": "active",
      "wallet_type": "PRE_PAID"
    },
    "wallet_id": "<string>"
  }
}