Node-RED flow to send notification with image to Home Assistant

node-red-ha-notification

/******* DO NOT COPY THIS COMMENT PART ********

It is so hard to find dynamically built JSON payloads to make
Home Assistant Call Service calls.  After watching this video 
where he has things pretty much hard coded I thought I'd put
together this little flow to show the structure needed to build
the payload to pass into a Call Service node.   The "data.data" 
property was a hanging point for me, but this works.

Reference:
https://www.youtube.com/watch?v=W11VXmSTYSM

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[
    {
        "id": "dade90c6.e239a",
        "type": "inject",
        "z": "d9259d.bae46a6",
        "name": "Test Message",
        "props": [
            {
                "p": "payload"
            }
        ],
        "repeat": "",
        "crontab": "",
        "once": false,
        "onceDelay": 0.1,
        "topic": "",
        "payload": "{\"domain\":\"notify\",\"service\":\"mobile_app_device_identifier\",\"data\":{\"title\":\"Driveway Motion\",\"message\":\"Car pulled into driveway\",\"data\":{\"attachment\":{\"content-type\":\"jpeg\",\"url\":\"https://yournabusubdomainname.ui.nabu.casa/local/snapshots/driveway.jpg\"}}}}",
        "payloadType": "json",
        "x": 750,
        "y": 240,
        "wires": [
            [
                "f19ab618.364288"
            ]
        ]
    },
    {
        "id": "f19ab618.364288",
        "type": "api-call-service",
        "z": "d9259d.bae46a6",
        "name": "Home Assistant Call",
        "server": "108ce91c.7d67a7",
        "version": 1,
        "debugenabled": false,
        "service_domain": "{{payload.domain}}",
        "service": "{{payload.service}}",
        "entityId": "",
        "data": "",
        "dataType": "json",
        "mergecontext": "",
        "output_location": "",
        "output_location_type": "none",
        "mustacheAltTags": false,
        "x": 960,
        "y": 240,
        "wires": [
            []
        ]
    },
    {
        "id": "108ce91c.7d67a7",
        "type": "server",
        "name": "Home Assistant Instance",
        "legacy": false,
        "addon": true,
        "rejectUnauthorizedCerts": true,
        "ha_boolean": "y|yes|true|on|home|open",
        "connectionDelay": true,
        "cacheJson": true
    }
]