{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949079,-0.315037,0.000000,0.000000,0.176096,-0.530504,0.829190,0.000000,-0.260676,0.785309,0.561549,0.000000,-1664382.235591,5014105.803551,3561421.687458,1],    "boundingVolume": {    "region": [1.891224,0.596204,1.891361,0.596310,0.000000,8.768397]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1446980.b3dm"}}}