{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951171,-0.308666,0.000000,0.000000,0.171345,-0.528010,0.831773,0.000000,-0.256206,0.789515,0.557696,0.000000,-1635823.489077,5040883.028957,3536933.835259,1],    "boundingVolume": {    "region": [1.884532,0.591564,1.884640,0.591651,0.000000,7.812064]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/6/54/42_1382998.b3dm"}}}