{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948877,-0.315646,0.000000,0.000000,0.176341,-0.530106,0.829392,0.000000,-0.261244,0.785335,0.561249,0.000000,-1668008.839644,5014266.052774,3559511.735560,1],    "boundingVolume": {    "region": [1.891865,0.595840,1.892003,0.595947,0.000000,8.203287]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/8_1069138.b3dm"}}}