curl --request GET \
  --url https://app.herondata.io/api/credentials/keys \
  --header 'x-api-key: <api-key>'

{
  "keys": [
    {
      "created": "2023-11-07T05:31:56Z",
      "heron_id": "<string>",
      "is_active": true,
      "last_used": "2023-11-07T05:31:56Z",
      "name": "<string>",
      "token_prefix": "<string>"
    }
  ]
}