Can't send json using json:// + notification body.

[gety9]

Describe the bug
Can't send json using json:// + Notification Body, exactly same json load is sent correctly with curl.

Version
Exact version in the top right area: 0.46.04

To Reproduce

Steps to reproduce the behavior:
1, On any watch go to edit > notifications
2, Set the URL to the API in Notification URL List (json://)
3, Set the JSON as required by the API in Notification Body
4, Click on Send Test Notification
5, Click on Notification Debug Logs

Expected behavior
JSON is sent correctly

Screenshots
notification url

notification body

log

exactly same json works fine with curl (response 200)

Tablet (please complete the following information):

• OS: [e.g. iOS] Android 11, server is hosted on termux (android linux)