D3 mysterious json parsing error

D3 mysterious json parsing error

D3 json parser is generating mysterious error. The json is as follows and
the string is validated by an online parser but d3 generates the error
"Unexpected token ]".
I'm totally confused. Please tell me whether it is the Json string's fault
or the parser?
{
"3090": [
"59205",
"72521"
],
"3130": [
"189939"
],
"3150": [
"58710"
],
"3258": [
"21738"
],
"3717": [
"61363"
],
"3719": [
"63965"
],
"3989": [
"47636",
"47656",
"58571",
"58741",
"58745",
"59266",
"139954"
],
"3991": [
"186438"
],
"3992": [
"38062",
"41032"
],
"4038": [
"59198"
],
"5009": [
"189476"
],
"027936": [
"179047"
],
"P391": [
"13461",
"679516",
"978543"
],
"M492": [
"170321",
"199900",
"273415",
"348748",
"966475"
],
"1P04": [
"49027",
"173470",
"1029583"
],
"N624": [
"178491",
"182573",
"204070",
"213200",
"220640",
"689284"
],
"M187": [
"65486",
"162474",
"167984",
"210661",
"218076",
"224395",
"256049",
"295905",
"298012",
"301037",
"307361",
"318149",
"320015",
"327478",
"329620",
"334297",
"334557",
"634880",
"714124",
"788333",
"976785",
"1016630",
"1017012",
"1026645",
"1048217",
"1048218"
],
"N622": [
"51453",
"150260",
"230713",
"632383",
"806624"
],
"N626": [
"268476",
"268481",
"721098",
"817611",
"941123",
"943528",
"1033581"
],
"057139": [
"114172"
],
"1F75": [
"18520",
"60105",
"215892",
"231772",
"807606",
"918089",
"943877",
"1039530"
],
"V056": [
"199919",
"292498",
"333106"
],
"V275": [
"24796",
"28969",
"29209",
"40253",
"303970",
"326940",
"332927",
"334300",
"597799",
"780261"
],
"K293": [
"6956",
"178352"
],
"W415": [
"22526"
]
}
d3.json("data/ms_org_hierarchy.json", function(errHier, hier){
d3.json("data/ms_org_user.json", function(errUser, users){
console.log(errHier);
console.log(hier);
console.log(errUser);
console.log(users);
}
}