Odoo API Call to update a record

Every time I try to update a record, I get this error:
The operation failed with an error. Function 'createRequestBody' finished with error! Expected ',' or ']' after array element in JSON at position 45

Input bundle:

[
    {
        "action": "write",
        "entity": "res.partner",
        "headers": [
            {
                "key": "Content-Type",
                "value": "application/json"
            }
        ],
        "parameters": "[{ \"args\": [\n      [28, {\"name\": \"New Name\"}\n}]"
    }
]

Output bundle:

[
    null
]