{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950522,-0.310657,0.000000,0.000000,0.173745,-0.531611,0.828977,0.000000,-0.256984,0.786299,0.561865,0.000000,-1640815.726262,5020433.596351,3563428.624154,1],    "boundingVolume": {    "region": [1.886631,0.596589,1.886729,0.596688,0.000000,15.223519]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/6_1393552.b3dm"}}}