Hi @HOrdonez
Relating to your original question --> yes, you can retrieve information about the owner of a Contact record, using the Contact API. For example:
GET
https://api.hubapi.com/crm/v3/objects/CONTACT/{{CONTACT_ID}}?properties=hubspot_owner_id,hubspot_owner_assigneddate,hubspot_team_id&hapikey={{HAPIKEY}}
Example Response Body:
{
"id": {{CONTACT_ID}},
"properties": {
"createdate": "2019-01-30T12:55:07.451Z",
"hs_object_id": {{CONTACT_ID}},
"hubspot_owner_assigneddate": "2021-08-26T14:30:29.555Z",
"hubspot_owner_id": {{CONTACT_OWNER_ID}},
"hubspot_team_id": {{CONTACT_OWNER_TEAM_ID}},
"lastmodifieddate": "2021-10-28T16:12:15.677Z"
},
"createdAt": "2019-01-30T12:55:07.451Z",
"updatedAt": "2021-10-28T16:12:15.677Z",
"archived": false
}
Likewise, specific property values can be retrieved when requesting lists or batches of Contacts via the API.
As @dennisedson mentioned, you can use the Get All Properties endpoint to inspect all available properties relevant to record ownership. Here are some I found that might be of interest (descriptions for each can be found in the API response):
- hubspot_owner_id
- hubspot_owner_assigneddate
- hs_all_owner_ids
- hs_user_ids_of_all_owners
- hubspot_team_id
- hs_all_team_ids
- owneremail (marked as legacy, returned null for me)
- ownername (marked as legacy, returned null for me)
Relating to your follow up question in this thread --> yes, it is possible to use the CRM Search API endpoint to retrieve a list of Contact records based on when they were last modified. For example:
POST
https://api.hubapi.com/crm/v3/objects/CONTACT/search?hapikey={{HAPIKEY}}
Request Body (JSON):
{
"limit": 5,
"filterGroups": [
{
"filters": [
{
"propertyName": "lastmodifieddate",
"operator": "GTE",
"value": "1635435000000"
}
]
}
]
}
For anyone not overly familiar with the CRM Search API --> “GTE” is the endpoint’s “greater than or equal to” operator, and “1635435000000” reflects the example target datetime in Unix epoch time (milliseconds). I generally use EpochConverter for generating test timestamps like this.
Finally, the Contact property being searched on in the above example is “lastmodifieddate”, not to be confused with “hs_lastmodifieddate”. The latter is a hidden property which, based on some very quick testing, cannot be used within CRM Search API filters.
Hope this helps 
All the best,
Zach