Http POST body

[admin]

Have you replaced "--devices ID--" with actual device id in the request URL?
Remove log calls from inside the request table.
Your JSON is incorrect, use json.encode to have a valid output:

Code:

test = json.encode({
  commands = {
    {
      component = 'main',
      capability = 'switch',
      command = 'on',
    }
  }
})