helm-external-secrets/docs/snippets/doppler-parse-json-secret.yaml

apiVersion: external-secrets.io/v1
kind: ExternalSecret
metadata:
  name: auth-api-sa-json
spec:
  secretStoreRef:
    kind: SecretStore
    name: doppler-auth-api

  target:
    name: auth-api-sa-json

  dataFrom:
    - extract:
        key: SA_JSON