Get usage analytics

curl --request POST \
  --url https://api.cloud.flexprice.io/v1/events/analytics \
  --header 'Content-Type: */*' \
  --header 'x-api-key: <api-key>' \
  --data '{
  "end_time": "<string>",
  "external_customer_id": "<string>",
  "feature_ids": [
    "<string>"
  ],
  "group_by": [
    "<string>"
  ],
  "property_filters": {},
  "sources": [
    "<string>"
  ],
  "start_time": "<string>",
  "window_size": "MINUTE"
}'

{
  "currency": "<string>",
  "items": [
    {
      "aggregation_type": "COUNT",
      "currency": "<string>",
      "event_count": 123,
      "event_name": "<string>",
      "feature_id": "<string>",
      "name": "<string>",
      "points": [
        {
          "cost": 123,
          "event_count": 123,
          "timestamp": "<string>",
          "usage": 123
        }
      ],
      "properties": {},
      "source": "<string>",
      "total_cost": 123,
      "total_usage": 123,
      "unit": "<string>",
      "unit_plural": "<string>"
    }
  ],
  "total_cost": 123
}