CloudWatch get resourceType metric data

I want to get metric data to CloudWatch dashboard.

( I using get_metric_data() method )

but, explorer type can't get metric data

example, I can obtain metric data in the following format:

"metrics": [
    ["AWS/EC2", "CPUUtilization", "InstanceId", "i-0b...", { "period": 300, "stat": "Average" }]
]

but I can't get metric data of:

"metrics": [
  {
      "metricName": "CPUUtilization",
      "resourceType": "AWS::EC2::Instance",
      "stat": "Average"
  }
]

How do I get resourceType metric data?