curl https://api.expys.com/v1/members/<externalUserID> \
  -H "Authorization: Bearer YOUR_ORG_API_KEY"

{
  "attributes": {},
  "displayName": "<string>",
  "externalUserID": "<string>",
  "redemptionCounts": {
    "AWAITING_CUSTOMER": 123,
    "AWAITING_VENDOR": 123,
    "CANCELED": 123,
    "COMPLETED": 123,
    "OPEN": 123,
    "PURCHASED": 123,
    "SUBMITTED": 123
  },
  "tier": "<string>",
  "wallet": {
    "amountReceived": 123,
    "amountSpent": 123,
    "balance": 123,
    "currency": {
      "name": "<string>",
      "symbol": "<string>"
    }
  }
}