aws sns confirm-subscription
Verifies an endpoint owner's intent to receive messages by validating the token sent to the endpoint by an earlier Subscribe action. AWS CLI reference
3 options Its page in the AWS CLI reference
Options
--authenticate-on-unsubscribeDisallows unauthenticated unsubscribes of the subscription.--tokenShort-lived token sent to an endpoint during the Subscribe action.--topic-arnThe ARN of the topic for which you wish to confirm a subscription.