How to avoid SyntaxError: missing : after property id @(shell):1:36 on mongoDb?

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I am new to mongodb and just started with mongodb .I am writingto grant roles to user but throw SyntaxError: missing : after property id @(shell):1:36.Tried removing space but did not workout .

db.grantRolesToUser(
{
"user",
roles: [{
"role" : "readWrite",
"db" : "chatlogging"
},
{ role: "userAdminAnyDatabase", db: "admin"}]
}
)

Any clue on this .Thanks in advance.

2 Answers
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