{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950145,-0.311809,0.000000,0.000000,0.173942,-0.530036,0.829943,0.000000,-0.258241,0.786912,0.560429,0.000000,-1648829.824279,5024317.680525,3554304.858143,1],    "boundingVolume": {    "region": [1.887811,0.594839,1.887975,0.594970,0.000000,8.809282]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1452241.b3dm"}}}