Feature

A GeoJSON feature object (see RFC 7946) containing the string "Feature" in a field named "type", the geometry in a field named "geometry", and key/value properties in a field named "properties".

JSON representation 
{
  "type": string,
  "geometry": value,
  "properties": value
}
Fields
type

string

This string is always present and equal to "Feature".
geometry

value (Value format)

The geometry of the feature. This will contain a google.protobuf.Struct if geometry is present for this feature. Otherwise, it will hold a google.protobuf.NullValue.
properties

value (Value format)

The properties of the feature. This will contain a google.protobuf.Struct if properties are present for this feature. Otherwise, it will hold a google.protobuf.NullValue.