Most people will go with less. Print the page. Signature it by pen. Scan it send it per mail. The other party prints and signature it and send it back.
A scanned signature is not a handwritten one and it leaves you with a sub-standart signature. But courts accept it while it even if its not to the letter of the law.
Here in Germany if you are buying an apartment there is a notary who actually reads the whole contract out loud. Then he checks if every party with their ID and then watches over the signatures.
No way you could buy an apartment with docusign.
Apart from that you can sign most contracts however you like or not at all if you can proof that both parties agreed to the contract e.g. by paying the invoice.
Docusign is just one part of the process I described, namely the process of making a formal offer. To complete the transaction, you need to have a lawyer look over all the documentation and get their approval first. The lawyers also hold the funds in escrow, and release them only when all parties sign off, and the keys are handed over.
Most people will also purchase title insurance in case the current owner has liens on the property that the lawyers did not find.
A scanned signature is not a handwritten one and it leaves you with a sub-standart signature. But courts accept it while it even if its not to the letter of the law.