{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949058,-0.315102,0.000000,0.000000,0.176148,-0.530541,0.829155,0.000000,-0.260718,0.785258,0.561601,0.000000,-1664652.571603,5013780.760102,3561750.718548,1],    "boundingVolume": {    "region": [1.891292,0.596266,1.891429,0.596373,0.000000,8.415152]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_1338664.b3dm"}}}