jq ' .metadata.annotations '

cat data/ann.json cat data/ann.json | jq ' .metadata.annotations ' 
{
  "metadata": {
    "annotations": {
      "deployment.kubernetes.io/revision": "1",
      "machine.openshift.io/owned": "",
      "label1" : "stam",
      "label2" : "another",
      "label3" : "one"
    }
  }
}
  
    
{
  "deployment.kubernetes.io/revision": "1",
  "machine.openshift.io/owned": "",
  "label1": "stam",
  "label2": "another",
  "label3": "one"
}