{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949113,-0.314936,0.000000,0.000000,0.116062,-0.349773,0.929617,0.000000,-0.292501,0.881503,0.370670,0.000000,-1866471.123796,5624932.703056,2349435.724123,1],    "boundingVolume": {    "region": [1.891131,0.379672,1.891239,0.379788,0.000000,60.795093]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/19_75671.b3dm"}}}