23.01.2023, 11:37 
		
	
	
		Try this. Result and/or errors can be seen in the Logs tab.
	
	
	
	
Code:
secret = '12345'
title = 'alert'
message = 'alert from LM'
http = require('socket.http')
json = require('json')
ltn12 = require('ltn12')
data = json.encode({
  Title = title,
  Message = message,
})
resp = {}
res, code = http.request({
  url = 'https://connect.signl4.com/webhook/' .. secret,
  method = 'POST',
  headers = {
    ['content-type'] = 'application/json',
    ['content-length'] = #data,
  },
  source = ltn12.source.string(data),
  sink = ltn12.sink.table(resp),
})
if res and code == 200 then
  resp = table.concat(tbl)
  log(resp)
else
  log(res, code)
end