curl --request GET \
  --url https://app.herondata.io/api/end_users/{end_user_id_or_heron_id}/heron_score \
  --header 'x-api-key: <api-key>'

{
  "data_quality_issues": [
    "transactions_without_timestamps"
  ],
  "feature_groups_contributions": {},
  "predicted_at": "2023-11-07T05:31:56Z",
  "reference_timestamp": "2023-11-07T05:31:56Z",
  "status": "not_available",
  "value": 123
}