{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949131,-0.314882,0.000000,0.000000,0.116084,-0.349906,0.929565,0.000000,-0.292435,0.881469,0.370803,0.000000,-1866048.456428,5624716.541149,2350283.119429,1],    "boundingVolume": {    "region": [1.891075,0.379816,1.891183,0.379931,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_77423.b3dm"}}}