{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949822,-0.312792,0.000000,0.000000,0.115252,-0.349974,0.929643,0.000000,-0.290518,0.882185,0.370606,0.000000,-1853816.707570,5629286.234457,2349030.339008,1],    "boundingVolume": {    "region": [1.888858,0.379570,1.888997,0.379752,0.000000,11.867691]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/8_73160.b3dm"}}}