How to upload user's contact data to HoundServer using Houndify python SDK

Question

I want to upload my contact data to Hound Server. Cloud you show me how to do it?

I want to try Phone Domain, but I caught following error.

Call john "Contact information is not available until it is synchronized with the Hound cloud."

I set RequestInfo UseContact data = true using python SDK, https://docs.houndify.com/reference/RequestInfo

But I can not upload user's contacts (OneContact(Firstname, PhonEntries...) to HoundServer. https://docs.houndify.com/reference/OneContact

Could you show me how to do it?