understand & parse HIM messages from DB Netz endpoint

{
	"common": {
		"remL": [
			{
				"type": "M",
				"code": "isFreetext",
				"txtN": "false"
			},
			{
				"type": "M",
				"code": "dbnetz_subcategory1stLevel",
				"txtN": "Gefährliches Ereignis"
			},
			{
				"type": "M",
				"code": "dbnetz_effects",
				"txtN": "[{"products":"P00000001111000","effectId":10,"texts":{"DE":{"lang":"DE","trafficTypeCode":"SGV","effect":"Umleitung","additionalEffects":[]}}},{"products":"P00011000000000","effectId":7,"texts":{"DE":{"lang":"DE","trafficTypeCode":"SPNV","effect":"Sonstiges","additionalEffects":[]}}}]"
			},
			{
				"type": "M",
				"code": "dbnetz_subcategory2ndLevel",
				"txtN": "Zugentgleisung"
			},
			{
				"type": "M",
				"code": "dbnetz_category",
				"txtN": "Sammelmeldung"
			},
			{
				"type": "M",
				"code": "dbnetz_prognosis",
				"txtN": "true"
			}
		],
		"himL": [
			{
				"hid": "HIM_FREETEXT_355514",
				"act": true,
				"head": "Sammelmeldung: Gefährliches Ereignis  - Zugentgleisung",
				"text": "Zustand nach Güterzugentgleisung im Knoten Augsburg vom 15.02.:<br />-Strecke Ulm - Augsburg Hbf uneingeschränkt befahrbar;<br />-Strecke Ulm - Augsburg Rbf eingleisig befahrbar (Zugfahrten von Augsburg Rbf bis Westheim/Schwab auf dem Gegengleis);<br />-Strecke Donauwörth - Augsburg Hbf eingleisig befahrbar (Zugfahrten von Augsburg Hbf bis Gersthofen im Gegengleis), SPNV mit besonderem Betriebsprogramm;<br />-Strecke Donauwörth - Augsburg Rbf nicht befahrbar, SGV wird über Ingolstadt umgeleitet",
				"icoX": 0,
				"prio": 1,
				"prod": 24,
				"lModDate": "20190220",
				"lModTime": "095824",
				"sDate": "20190215",
				"sTime": "014000",
				"eDate": "20190225",
				"eTime": "120000",
				"cat": 0,
				"pubChL": [
					{
						"name": "1",
						"fDate": "20190219",
						"fTime": "000000",
						"tDate": "20190225",
						"tTime": "120000"
					}
				],
				"rRefL": [
					0,
					1,
					2,
					3,
					4,
					5
				],
				"eventRefL": [
					0
				],
				"impactL": [
					{
						"products": 1920,
						"prodCode": "SGV",
						"impact": "Umleitung",
						"icoX": 1,
						"prio": 1
					},
					{
						"products": 24,
						"prodCode": "SPNV",
						"impact": "Sonstiges",
						"icoX": 0,
						"prio": 1
					}
				]
			}
		],
		"icoL": [
			{
				"res": "HIM10216"
			},
			{
				"res": "HIM10005"
			}
		],
		"himMsgEventL": [
			{
				"fDate": "20190219",
				"fTime": "000000",
				"tDate": "20190225",
				"tTime": "120000"
			}
		]
	},
	"msgRefL": [
		0
	],
	"lastUpd": "2019-02-22, 09:51"
}