App root content topic
    /free-form/0.0.1/{content-topic-for-particular-use}/proto


1. User logs in with his wallet
    1.1 User's preferences are fetched from following content topic
        id = waller-or-uuid-or-pubkey
        /fee-form/{version}/user:{id}/proto
2. User creates new form
    2.1 Form topic is set up
        id = uuid
        /free-form/0/form:{id}/proto
    2.2 User sets form scheme, version, signature
    2.3 Scheme is sent
3.