{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950179,-0.311704,0.000000,0.000000,0.174082,-0.530659,0.829516,0.000000,-0.258020,0.786531,0.561065,0.000000,-1647422.987503,5021899.548915,3558345.081478,1],    "boundingVolume": {    "region": [1.887733,0.595614,1.887832,0.595730,0.000000,8.805452]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/12_1428407.b3dm"}}}