[SOLVED] REST API call returning bad request in powershell but it works in the API help page

REST API call returning bad request in powershell but it works in the API help page

I'm trying to make a REST call through powershell but I'm getting "error 400 bad request". I'm importing a JSON file using ConvertFrom-Json then inputting it into the body of the call via ConvertTo-Json. The weird part is that if I take just $json | ConvertTo-Json -Depth 3 and copy the output to the API page it works no problem so it appears to be formatted correctly. Any ideas what might be causing this?

I removed the username, passsword, and API key for security reasons but I know that those are correct. I've been able to get pretty much this exact block of code working except instead of inputting the body via ConvertTo-Json I manually entered the parameters in there.

$username = "UserName"
$password = ConvertTo-SecureString "Password" -AsPlainText -Force
$credential = New-Object System.Management.Automation.PSCredential($username, $password)
$headers = @{
    "accept" = "application/json"
    "X-API-Key" = "API-KEY"
    }
$response = Invoke-RestMethod -Uri "URI"`
    -Method Post `
    -Credential $credential `
    -Headers $headers `
    -ContentType "application/json" `
    -Body $json | ConvertTo-Json -Depth 3
   }

Solution

Nevermind I figured it out. I needed to convert the entire JSON to a string for the body of the REST call. The snippet below ended up working for me.

$body = $json | ConvertTo-Json -Depth 3
$username = "USERNAME"
$password = ConvertTo-SecureString "PASSWORD" -AsPlainText -Force
$credential = New-Object System.Management.Automation.PSCredential($username, $password)
$headers = @{
    "accept" = "application/json"
    "X-API-Key" = "API KEY"
    }
$response = Invoke-RestMethod -Uri "URI"`
    -Method Post `
    -Credential $credential `
    -Headers $headers `
    -ContentType "application/json" `
    -Body $body.ToString()
   }