Deletes a subscription. If the subscription requires authentication for
deletion, only the owner of the subscription or the topic's owner can
unsubscribe, and an AWS signature is required. If the Unsubscribe call
does not require authentication and the requester is not the
subscription owner, a final cancellation message is delivered to the
endpoint, so that the endpoint owner can easily resubscribe to the topic
if the Unsubscribe request was unintended.
This action is throttled at 100 transactions per second (TPS).
sns_unsubscribe(SubscriptionArn)[required] The ARN of the subscription to be deleted.
svc$unsubscribe( SubscriptionArn = "string" )