Retrieve Ids in Google Assistant

[beam-wave]

Google Assistant

{
"@context": "https://www.w3.org/ns/activitystreams",
"type": "Create",
"generator": {
"id": "f6e92eb6-f69e-4eae-8158-06613461cf3a",
"type": "Service",
"name": "google-assistant"
},
"object": {
"type": "Note",
"content": "hello world"
},
"to": {
"id": "IL12J7nWa/2zothSEg46DsY0q7o/H9FUis/YGdp64te=",
"type": "Person"
}
}

Can anyone help me in finding out the id in "Generator" and "To" ?