`data` parameter is not at the right level

[Aohzan]

Hello,

When I add data parameters for the service like this :

type: custom:notify-card
...
data:
  volume_level: 0.3
  title: Announce

it will send to a sub data key to the service.

You have to merge the msg with the data to provide only one data dict:

var service_data = Object.assign({}, this.config.data, { message: msg });
this.hass.callService(domain, target, service_data);

[bernikr]

As specified in the service documentation additional data for notification services is sent in dict named data inside of the main data dict.

You can check this integration example on how the payload should usually look.

Example:

automation:
  - alias: "Front door motion"
    trigger:
      platform: state
      entity_id: binary_sensor.front_door_motion
      to: "on"
    action:
      service: notify.livingroom_tv
      data:
        message: "Movement detected: Front Door"
        data:
          icon: "/home/homeassistant/images/doorbell.png"