General

By default response contains 3 fields

{
  "error" : boolean,
  "msg" : string,
  "status" : integer
}

Response can contain more fields if the request was asking for some data. Then those data is returned in _data field:

{
  "error" : false,
  "msg" : "Avaliable trailers list",
  "status" : 200,
  "_data" : [
    {
      "registration_number" : "XYZ 1234",
      "doors" : "closed",
      "bolt" : "locked",
    },
    [...]
  ]
}