curl --request POST \
  --url https://api.hubapi.com/crm/v3/objects/contacts/batch/upsert \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "inputs": [
    {
      "idProperty": "<string>",
      "objectWriteTraceId": "<string>",
      "id": "<string>",
      "properties": "{\"lastname\":\"S.\",\"firstname\":\"Mark\"}"
    }
  ]
}'

{
  "completedAt": "2023-11-07T05:31:56Z",
  "numErrors": 123,
  "requestedAt": "2023-11-07T05:31:56Z",
  "startedAt": "2023-11-07T05:31:56Z",
  "links": {},
  "results": [
    {
      "createdAt": "2023-11-07T05:31:56Z",
      "archived": true,
      "archivedAt": "2023-11-07T05:31:56Z",
      "new": true,
      "propertiesWithHistory": {},
      "id": "<string>",
      "objectWriteTraceId": "<string>",
      "properties": {},
      "updatedAt": "2023-11-07T05:31:56Z"
    }
  ],
  "errors": [
    {
      "subCategory": {},
      "context": {},
      "links": {},
      "id": "<string>",
      "category": "<string>",
      "message": "<string>",
      "errors": [
        {
          "subCategory": "<string>",
          "code": "<string>",
          "in": "<string>",
          "context": "{\"missingScopes\":[\"scope1\",\"scope2\"]}",
          "message": "<string>"
        }
      ],
      "status": "<string>"
    }
  ],
  "status": "PENDING"
}