elasticsearch-js/docs/reference/api/MlDatafeedAuthorization.md

Interface MlDatafeedAuthorization

Name	Type	Description
api_key	MlApiKeyAuthorization	If an API key was used for the most recent update to the datafeed, its name and identifier are listed in the response.
roles	string[]	If a user ID was used for the most recent update to the datafeed, its roles at the time of the update are listed in the response.
service_account	string	If a service account was used for the most recent update to the datafeed, the account name is listed in the response.