Retrieve Grafana Slack Channel
RetrieveAGrafanaSlackNotificationChannel[GET]    
curl -X GET https://accelerator.shimmercat.com/presentation-api/v1/grafana-notification-channel/slack/<channel_id>/ -H 'Authorization: Token <your_authentication_token>' -H 'Content-type: application/json'
curl -X GET https://accelerator.shimmercat.com/presentation-api/v1/grafana-notification-channel/slack/<channel_id>/ -H 'Authorization: Token <your_authentication_token>' -H 'Content-type: application/json'
Retrieves information about single Grafana Slack Notification Channel.