{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.897603,-0.440805,0.000000,0.000000,0.285938,-0.582251,0.761067,0.000000,-0.334532,0.681200,0.651195,0.000000,-2136723.589789,4350969.729318,4131473.026508,1],    "boundingVolume": {    "region": [2.027216,0.709044,2.027367,0.709271,0.000000,20.042469]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/7_1780056.b3dm"}}}