Update Activity model

app/Activity.php

@@ -7,4 +7,14 @@ use Illuminate\Database\Eloquent\Model;
 class Activity extends Model
 {
     protected $dates = ['processed_at'];
+
+	public function toProfile()
+	{
+		return $this->belongsTo(Profile::class, 'to_id');
+	}
+
+	public function fromProfile()
+	{
+		return $this->belongsTo(Profile::class, 'from_id');
+	}
 }