curl --request POST \
  --url https://api2.rhombussystems.com/api/button/updateConfig \
  --header 'Content-Type: application/json' \
  --header 'x-auth-apikey: <api-key>' \
  --header 'x-auth-scheme: <x-auth-scheme>' \
  --data '
{
  "configUpdate": {
    "button_emergency_onsite_contact": {
      "name": "<string>",
      "phoneNumber": "<string>"
    },
    "button_test_mode_enabled": true,
    "deviceUuid": "AAAAAAAAAAAAAAAAAAAAAA",
    "lastModified": 123,
    "orgUuid": "AAAAAAAAAAAAAAAAAAAAAA"
  }
}
'

{
  "error": true,
  "errorMsg": "<string>",
  "warningMsg": "<string>"
}