{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949065,-0.315080,0.000000,0.000000,0.176123,-0.530508,0.829181,0.000000,-0.260708,0.785290,0.561562,0.000000,-1664591.174275,5013979.792543,3561500.909824,1],    "boundingVolume": {    "region": [1.891269,0.596219,1.891406,0.596325,0.000000,8.768397]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1447269.b3dm"}}}