curl --request GET \
  --url https://api.loyalty.dog/v2/merchants/{merchant_id}/metrics \
  --header 'Authorization: Bearer <token>'

{
  "activeMembers": 123,
  "redemptions": 123,
  "engagementRate": 123,
  "pointsIssued": 123,
  "currencyEquivalent": 123,
  "trends": {
    "activeMembers": 123,
    "redemptions": 123,
    "engagementRate": 123,
    "pointsIssued": 123
  }
}