Umdns instead avahi-daemon for announce services

I would like to use standard umdns daemon but it fully ignored .json files in /etc/umdns/ directory. Who knows why?

Below my json file for umdns:
/etc/umdns/apple_service.json

{
	"adisk_smb": {
		"service": "_smb._tcp",
		"port": 445
	}
	
	"dev_info": {
		"service": "_device-info._tcp",
		"txt": [ "model=TimeCapsule8,119" ],
		"port": 0
	},
	
	"timemachine": {
		"service": "_adisk._tcp",
		"txt": [
			"sys=waMa=0",
			"adVF=0x100"
		],
		"txt": [
			"dk0=adVN=Backup",
			"adVF=0x82",
			"adVU=7afb0813-c5ed-45f6-a2f6-c6e10a9408fb"
		]
	}
}

At the same time service file for avahi works correctly:
/etc/avahi/services/apple.service

<?xml version="1.0" standalone='no'?><!--*-nxml-*-->
<!DOCTYPE service-group SYSTEM "avahi-service.dtd">
<service-group>
	<name replace-wildcards="yes">%h</name>
		<service>
			<type>_smb._tcp</type>
			<port>445</port>
		</service>
		<service>
		<type>_device-info._tcp</type>
			<port>0</port>
			<txt-record>model=TimeCapsule8,119</txt-record>
		</service>
		<service>
			<type>_adisk._tcp</type>
			<txt-record>sys=waMa=0,adVF=0x100</txt-record>
			<txt-record>dk0=adVN=Backup,adVF=0x82,adVU=7afb0813-c5ed-45f6-a2f6-c6e10a9408fb</txt-record>
		</service>
</service-group>

P.S. Before experimenting with umdns services I fully disable avahi-daemon, but umdns not announcing any new services after restart. :sob: