aws redshift cli parsing using jason parser

I would like to select the output from JSON output (using aws aws cli)as following, I am new to JSON. I want to delete the aws manual snapshots I want to select the parameter manual snapshots

example output of describe cluster snapshots

SnapshotCreateTime": "2015-04-20T05:21:04.701Z",
            "AvailabilityZone": "us-west-2a",
            "NodeType": "dw2.large",
            "Encrypted": false,
            "ElapsedTimeInSeconds": 220,
            "SnapshotType": "automated",
            "Port": 5439,