API Help: Unable to parse JSON

API Help: Unable to parse JSON

Hi, I'm trying to get comfortable adding assets to ME through API with the intention to build a tool in Powershell that my colleagues can use to quickly add assets too. We use the web browser to add these usually.

I was trying out the Self-Client set up and I am able to generate the authorization code I need and I can generate my refresh token however when trying to send a POST request to add an asset I get the error:

`Invoke-RestMethod : 
{"response_status":{"status_code":4000,"messages":[{"status_code":4001,"field":"input_data","type":"failed","message":"Unable to parse JSON for 
: input_data"}],"status":"failed"}}`


The code used for the script is from the docs: https://www.manageengine.com/products/service-desk/sdpod-v3-api/assets/asset.html

My JSON has been put through multiple parsers to ensure it is readable so I'm unsure what the issue is. I've also tried XML but it produces the same error.

Code: 

`#Powershell version - 5.1

$url = "https://<URL>.sdpondemand.manageengine.com/api/v3/workstations"
$headers = @{ "Accept" = "application/vnd.manageengine.sdp.v3+json"
    "Authorization" = "Zoho-oauthtoken 1000.xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
    "Content-Type" = "application/x-www-form-urlencoded"}
$input_data = @'
{
  {
    "workstation":{
        "vm_type":"0",
        "site":{"id":"14581000038091259"},
        "udf_fields":{
            "udf_boolean2":false,
            "udf_boolean1":false
            },
        "state":{"id":"14581000000006135"},
        "name":"TEST1_self",
        "computer_system":{
         "service_tag":"TEST1_self",
         "system_manufacturer":"HP",
         "model":"ProBook 440 G9"
        },
      "product":{"id":"14581000036367007"},
      "memory":{"physical_memory":17179869184},
      "asset_tag":"TEST1",
      "serial_number":"TEST1",
      "vendor":{"id":"14581000010580765"},
      "purchase_cost":809,
      "acquisition_date":{"value":1716850800000},
      "workstation_udf_fields":{"udf_char1":"LAPTOP"},
      "processors":[],
      "network_adapters":[],
      "hard_disks":[],
      "monitors":[]
    }
  }
}'
'@
$data = @{ 'input_data' = $input_data}
$response = Invoke-RestMethod -Uri $url -Method post -Body $data -Headers $headers
$response

`

Any help would be appreciated, please explain like I am 5 years old!

Thanks