@flyize here you go, give this a try.
[{"id":"80f259f8.d48e58","type":"inject","z":"4f853fd0.1ea12","name":"","repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"on","payloadType":"str","x":2600.892749786377,"y":1160.7145805358887,"wires":[["c60b9fb7.96e0a"]]},{"id":"1ec13a69.bd52a6","type":"debug","z":"4f853fd0.1ea12","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":3513.9284744262695,"y":1093.0357999801636,"wires":[]},{"id":"48c5b9ce.045e28","type":"debug","z":"4f853fd0.1ea12","name":"","active":false,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":3871.607258796692,"y":1155.8928337097168,"wires":[]},{"id":"cb1daaec.101868","type":"api-call-service","z":"4f853fd0.1ea12","name":"Alexa - Alarm deactivated (Rnd)","server":"8a3231e1.3f0e1","version":1,"service_domain":"notify","service":"alexa_media","entityId":"","data":"","dataType":"json","mergecontext":"","output_location":"payload","output_location_type":"msg","mustacheAltTags":true,"x":3605.3572540283203,"y":1155.8928327560425,"wires":[["48c5b9ce.045e28"]]},{"id":"c60b9fb7.96e0a","type":"change","z":"4f853fd0.1ea12","name":"Set Alexa Attributes","rules":[{"t":"set","p":"volume","pt":"flow","to":"0.4","tot":"str"},{"t":"set","p":"target","pt":"flow","to":"media_player.office_echo_dot","tot":"str"},{"t":"set","p":"message","pt":"flow","to":"Test of Alexa","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":2822.8572387695312,"y":1158.3928337097168,"wires":[["d63ff.9807ec018","db082c18.6fb7"]]},{"id":"d63ff.9807ec018","type":"function","z":"4f853fd0.1ea12","name":"Create Alexa Alert","func":"\nvar target = flow.get('target')\nvar message = flow.get('message')\n\nvar payload = \n{\n \"data\":\n {\n \"target\": `${target}`,\n \"message\": `${message}`\n }\n}\nmsg.payload = payload\nmsg.topic = `${target}`\nreturn msg","outputs":1,"noerr":0,"initialize":"","finalize":"","x":3054.107192993164,"y":1158.3928184509277,"wires":[["c96d9564.ab25d8"]]},{"id":"db082c18.6fb7","type":"debug","z":"4f853fd0.1ea12","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":3018.5714797973633,"y":1234.8214235305786,"wires":[]},{"id":"c96d9564.ab25d8","type":"template","z":"4f853fd0.1ea12","name":"Alexa device - Template","field":"payload","fieldType":"msg","format":"handlebars","syntax":"mustache","template":"{\n\"data\": \n {\n \"message\": \"{{ payload.data.message}}\",\n \"target\": \"{{ payload.data.target }}\",\n \"data\": {\n \"type\": \"announce\"\n }\n }\n} ","output":"json","x":3302.857246398926,"y":1157.1428327560425,"wires":[["cb1daaec.101868","1ec13a69.bd52a6"]]},{"id":"8a3231e1.3f0e1","type":"server","name":"Hassio","legacy":false,"rejectUnauthorizedCerts":true,"ha_boolean":"y|yes|true|on|home|open","connectionDelay":false}]