For recipients loop:
$this->notificationService->send(
    $recipient->id,
    'property.new',
    'New Property Available',
    'A new property has been posted',
    ['property_id' => $property->id],
    $user->id
);


After update success:
$this->notificationService->send(
    $property->user_id,
    'property.updated',
    'Property Updated',
    'Your property has been updated successfully',
    ['property_id' => $property->id],
    $user->id
);


DELETE PROPERTY
Before return:
$this->notificationService->send(
    $property->user_id,
    'property.deleted',
    'Property Deleted',
    'Your property has been deleted',
    ['property_id' => $property->id],
    $user->id
);


Notify assigned user:
$this->notificationService->send(
    $assignedUser->id,
    'property.assigned',
    'New Property Assignment',
    'You have been assigned to a property',
    ['property_id' => $property->id, 'role' => $assignedUserRole],
    $authUser->id
);


Notify owner:
$this->notificationService->send(
    $authUser->id,
    'property.assignment_sent',
    'Assignment Sent',
    'You assigned a user to your property',
    ['property_id' => $property->id],
    $assignedUser->id
);

REMOVE ASSIGNMENT
$this->notificationService->send(
    $removedUser->id,
    'property.assignment_removed',
    'Assignment Removed',
    'You were removed from a property',
    ['property_id' => $property->id],
    $authUser->id
);


ACCEPT ASSIGNMENT (IMPORTANT FLOW)
Notify OWNER:
$this->notificationService->send(
    $property->user_id,
    'property.assignment_accepted',
    'Assignment Accepted',
    'A user accepted your property assignment',
    [
        'property_id' => $property->id,
        'user_id' => $assignedUser->id,
        'role' => $role
    ],
    $assignedUser->id
);

Notify USER:
$this->notificationService->send(
    $assignedUser->id,
    'property.accepted',
    'You Accepted Assignment',
    'You successfully accepted the property assignment',
    ['property_id' => $property->id],
    $property->user_id
);


DECLINE ASSIGNMENT
Notify OWNER:
$this->notificationService->send(
    $property->user_id,
    'property.assignment_declined',
    'Assignment Declined',
    'A user declined your property assignment',
    [
        'property_id' => $property->id,
        'user_id' => $assignedUser->id
    ],
    $assignedUser->id
);