{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949024,-0.315203,0.000000,0.000000,0.175981,-0.529850,0.829633,0.000000,-0.260953,0.785687,0.560891,0.000000,-1666148.493761,5016506.191984,3557241.214342,1],    "boundingVolume": {    "region": [1.891398,0.595409,1.891535,0.595515,0.000000,8.648008]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/4_1071821.b3dm"}}}