Some example about how to create a document

[DiazRock]

I'm following the official doc of the node API, and the developers docs for a p2p node. I succes installed my node on my machine with ubuntu 18.04. I ping it and I got:

{
    "version": "1.0.0+0b1c3d55df5c410a5a6c57a1addcfa2c26b0a58f",
    "network": "flint"
}

I want to create a document with my centrifuge node. But I can't find any example around there, and the example of api docs is not very helpful. I tried with this json

{
    "attributes": {},
    "data": {},
    "document_id": "",
    "read_access": [
        "string"
    ],
    "schema": "",
    "write_access": [
        "string"
    ]
}

But it gave me "Malformed address". I tried generating two bit32 numbers in hex format for schema and document_id, but I got the same error. Would you guys help me?