Convert cURL to PowerShell Invoke-WebRequest - JSON data table issue - json

Question

I have the following PowerShell script that uses cURL in Windows 10 and works perfectly:
$Body = #{
'data' = #{
'CID' = 15;
'HID' = 37;
'Type' = "TYPE1";
'downloadOn' = "NEXT_CONTACT";
'AutomationEnabled' = "True";
}
}
$CurlArgument = '-s', '-X', 'PATCH',
'-H', 'Content-Type: application/json',
$URL,
'-H',
$AuthBearer,
'-d',
(($Body | ConvertTo-Json) -replace '"', '\"')
Write-Host "$Section cURL command took" ("{0:n1}" -f (Measure-Command {$UpdateResponse = & $CURLEXE #CurlArgument}).TotalSeconds) "Seconds" -ErrorAction SilentlyContinue
I can't use cURL, I need to use native Invoke-WebRequest on my production servers. I need to convert the above into a Invoke-WebRequest command, which I have done, as follows:
$Body = #{
'data' = #{
'CID' = 15;
'HID' = 37;
'Type' = "TYPE1";
'downloadOn' = "NEXT_CONTACT";
'AutomationEnabled' = "True";
}
}
(($Body | ConvertTo-Json) -replace '"', '\"')
$Method = "PATCH"
$Header = #{"Accept" = "*/*" ; "Cache-Control" = "no-cache" ; "Host" = "myURL"; "accept-encoding" = "gzip,deflate"; "Authorization" = "Bearer $SessionToken" }
$ContentType = "application/json"
Write-Host "$Section Invoke-WebRequest command took" ("{0:n1}" -f (Measure-Command { $UpdateResponse = Invoke-WebRequest -Method $Method -Uri $URL -Header $Header -ContentType $ContentType -Body $Body }).TotalSeconds) "Seconds"
When I run the Invoke-WebRequest, I get the following error, i.e. A JSONObject text must begin with '{':
Invoke-WebRequest : {"status":"FAILURE","errors":...."message":{"5011":"A JSONObject text must begin with '{' at 1 [character 2 line 1]"}}]}
My $Body looks like this i.e. it begins with '{' :
{
\"data\": {
\"downloadOn\": \"NEXT_CONTACT\",
\"HID\": 37,
\"AutomationEnabled\": \"True\",
\"CID\": 15,
\"Type\": \"TYPE1\"
}
}
I tried with and without "-replace '"', '\"'", from this post"
cURL to PowerShell - Double hash table in --data?
Looking at my $Body JSON "object"(?), I can see this:
Name Value
---- -----
data {downloadOn, HID, AutomationEnabled, CID...}
Looking at my Value, I can see it is listed as follows:
Name Value
---- -----
downloadOn NEXT_CONTACT
HID 37
AutomationEnabled True
CID 15
Type TYPE1
Instead of sending -Body $Body,I thought maybe I should just sent the values, as follows (which also failed) with the same message.
-Body $Body.Values
I did a heap of searching last night, but I am at a loss on how to convert that into a successful Invoke-WebRequest, and any help would be appreciated.

Answer 1

You are sending $Body as a Hashtable, try converting it to JSON
$Body = $Body | ConvertTo-Json
If you send $Body before the above line and again after to an echo service you'll see the difference
Invoke-RestMethod -Method 'POST' -Uri 'https://postman-echo.com/post' -ContentType 'application/json' -Body $Body