I got it working, we can pass data in following way:
$publishResponse = $pushNotifications->publishToInterests(
["donuts"],
[
"apns" => [
"aps" => [
"alert" => "Hello!",
],
],
"fcm" => [
"notification" => [
"title" => "Hello!",
"body" => "Hello, world!",
],
"data" => [ // <==== pass data here
"name" => "adam",
"type" => "user",
],
],
]
);
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