{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950568,-0.310516,0.000000,0.000000,0.173564,-0.531325,0.829198,0.000000,-0.256937,0.786549,0.561537,0.000000,-1640511.813428,5022021.823892,3561344.014582,1],    "boundingVolume": {    "region": [1.886483,0.596193,1.886581,0.596291,0.000000,8.817629]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/2_1427456.b3dm"}}}