{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949317,-0.314319,0.000000,0.000000,0.175721,-0.530718,0.829132,0.000000,-0.260063,0.785452,0.561634,0.000000,-1660473.270395,5015015.130849,3561962.306491,1],    "boundingVolume": {    "region": [1.890486,0.596319,1.890585,0.596401,0.000000,8.803256]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/13_1416754.b3dm"}}}