# AuthenticationRequest
Request on authentication.

## Properties
### `UserCredentials`
[`UserCredentials`](../user/UserCredentials.md)<br/>
User credentials - login and password.

### `DeviceType`
[`EnumValue`](../../enumerations/EnumValue.md)<br/>
Type of device which is used for authentication and receiving data from server, values from [`DeviceType`](../../enumerations/DeviceType.md).

### `messageType`
`String`<br/>
Type of message, this property is **readonly**.