{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948947,-0.315434,0.000000,0.000000,0.176015,-0.529520,0.829836,0.000000,-0.261209,0.785818,0.560589,0.000000,-1667783.871109,5017334.785010,3555318.692483,1],    "boundingVolume": {    "region": [1.891663,0.595002,1.891758,0.595192,0.000000,8.807851]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/29_1075221.b3dm"}}}