{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.897483,-0.441048,0.000000,0.000000,0.283245,-0.576373,0.766529,0.000000,-0.337137,0.686036,0.644742,0.000000,-2153305.338338,4381735.323709,4090420.650361,1],    "boundingVolume": {    "region": [2.027499,0.700652,2.027626,0.700720,0.000000,7.943723]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/8_858734.b3dm"}}}