SubActivityModel

{
    "parent": "42e2bc1b-6741-4e2e-b138-97b4a342c999",
    "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
    "type": "paid",
    "actor": "b4172a54-df0e-4918-8f0c-143e6e6d9830",
    "proxy": "2df1c044-2b92-4b6e-a41c-a8bd9dc68c78",
    "summary": "string",
    "published_at": "2019-08-24T14:15:22Z",
    "resource": {
        "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
        "type": "string",
        "data": {}
    }
}