Question about MYOB EXO Business API Report Endpoint

Hi,

Does anyone have any experience with the Report endpoint for Exo Business? Documentation here: Run Report (myob.com)

I am struggling to get the API to accept the "seqno" parameter for the Opportunity.CLR Clarity report. I'm writing this in Python, here is my payload and request:

payload = {

    "parameters": [

        {"seqno": "28202"}

    ]

}

response = requests.put(url, headers=headers, json=payload, auth=HTTPBasicAuth(username, password))

Here is the error I receive when running the script: 

Failed to run the report. Status code: 400
{
  "message": "Unknown parameter "
}

Let me know if my formatting for the object in payload is incorrect or if something else is wrong. Thanks in advance.