GeoJSON data to database

GeoJSON data from figure to database

src/mapmarkers/mapmarker.dto.ts

-import { IsString, IsDateString } from 'class-validator';
-import { Timestamp } from 'typeorm';
+import { IsString, IsJSON } from 'class-validator';
+/*
+DTO: MapMarker
+- represents servers data handling.
+*/
+
 
 export class MapMarkerDTO {
     @IsString()
@@ -10,4 +14,6 @@ export class MapMarkerDTO {
     longitude: string;
     @IsString()
     timestamp: string;    
+    @IsJSON()
+    features: JSON;
 }
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