my_message.proto

syntax = "proto3";

package ld.proto;

message Feature {

  message Geometry {
    repeated double coordinates = 1;
    string type = 2;
  }

  message Properties {
    float amp = 1;
    string created = 2;
    string observed = 3;
    string sensors = 4;
    uint32 strokes = 5;
    uint32 type = 6;
  }

  Geometry geometry = 1;
  Properties properties = 2;
  string type = 3;
  string id = 4;
}