{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950364,-0.311140,0.000000,0.000000,0.173661,-0.530441,0.829744,0.000000,-0.257624,0.786903,0.560726,0.000000,-1644895.057646,5024263.757271,3556191.014104,1],    "boundingVolume": {    "region": [1.887139,0.595204,1.887238,0.595321,0.000000,8.789344]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1454370.b3dm"}}}