{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950544,-0.310590,0.000000,0.000000,0.173628,-0.531380,0.829149,0.000000,-0.256983,0.786483,0.561609,0.000000,-1640808.532161,5021597.930360,3561801.932093,1],    "boundingVolume": {    "region": [1.886562,0.596280,1.886659,0.596379,0.000000,8.572724]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/3_1388626.b3dm"}}}