{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949087,-0.315013,0.000000,0.000000,0.116136,-0.349902,0.929560,0.000000,-0.292554,0.881424,0.370816,0.000000,-1866811.590452,5624430.098921,2350362.056972,1],    "boundingVolume": {    "region": [1.891212,0.379830,1.891321,0.379945,0.000000,73.888115]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/16/21_77647.b3dm"}}}