curl --request POST \
  --url https://api.voxo.co/v2/admin/button-layouts/ \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "tenantId": 123,
  "name": "<string>",
  "startKey": 123,
  "endKey": 123
}
'

{
  "id": 123,
  "tenantId": 123,
  "name": "<string>",
  "startKey": 123,
  "endKey": 123,
  "config": [
    {
      "key": 123,
      "type": "<string>",
      "name": "<string>",
      "number": "<string>"
    }
  ]
}