I am using Marshmallow for serialization and de-serialization of JSON strings. From the Marshmallow API Docs (<https://marshmallow.readthedocs.io/en/3.0/api_reference.html>), it looks like you have specify a list of fields (and, unless using `Meta`) their data type. For example:

```
Marital_Status=Fields.Str()
Employer=Fields.Str()
ContactInfo(data) #where ContactInfo is a class not shown here

```

However, I already have a JSON schema that specifies the fields and the data types. For example:

```
the_template_schema={

"definitions": {},
"$schema": "http://json-schema.org/draft-07/schema#",
"$id": "http://example.com/root.json",
"type": "object",
"title": "The Root Schema",
"properties": {
 "Marital_Status": {
  "$id": "#/properties/Marital_Status",
  "type": "string",
  "title": "The Marital_status Schema",
  "default": "",
  "examples": [
    "Married"
  ],
  "pattern": "^(.*)$"
}
"Employer": {
  "$id": "#/properties/Employer",
  "type": "string",
  "title": "The Employer Schema",
  "default": "",
  "examples": [
    "Roivant"
  ],
  "pattern": "^(.*)$"
        }

    }
}

```

**My Question**

I want to specify to Marshmallow the fields, based on the schema data provided. Something like:

```
fields.magicmethod(the_template_schema)
ContactInfo(data)

```

Is this possible? If so, how?