Parser application send to Sheet with JSON

Parser application send to Sheet with JSON

I have a desktop email parser that can submit HTTP request to a Web API via JSON, however I keep getting an authentication error. 
I have registered my application via client API.  My desktop parser has the following parameters:

POST to https://sheet.zoho.com/api/v2/<clientID>
Parameters:
      method: worksheet.records.add
      worksheet_name: PV
Bearer Token:
      Zoho-oauthtoken 1000.<tokenid>
Body:
      [{"Field Names":"Field entry", etc }]

However I keep getting error 2401 saying my token is not valid. 
Not sure what I'm doing wrong here.  Thanks for any help you can provide.

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