Help trying to extract object attribute

General
3 
{
"_msgid" : 56fc02d6.3693bc,
"topic" : ,
"payload" : -{
"domain" : image_processing,
"service" : scan,
"data" : -{
"entity_id" : image_processing.facebox_office_camera
}
},
"data.attributes.matched_faces()" : 1,
"data" : -{
"entity_id" : image_processing.facebox_office_camera,
"state" : 1,
"attributes" : -{
"faces" : -[
-{
"name" : josiah,
"image_id" : IMG_4891.jpg,
"confidence" : 56.41,
"matched" : true,
"bounding_box" : -{
"top" : 270,
"left" : 906,
"width" : 155,
"height" : 155
},
"entity_id" : image_processing.facebox_office_camera
}
],
"total_faces" : 1,
"matched_faces" : -{
"josiah" : 56.41
},
"total_matched_faces" : 1,
"hostname" : hub,
"friendly_name" : facebox office_camera,
"device_class" : face
},
"last_changed" : 2019-10-05T17:41:09.476352+00:00,
"last_updated" : 2019-10-05T17:42:12.377173+00:00,
"context" : -{
"id" : 158c9b818cd84df8a2ad5826e4b2ca4c,
"parent_id" : ,
"user_id" : d29765725df941a590824c9df8541647
},
"timeSinceChangedMs" : 62914
}
}