{
"user.name" : "hylanduser",
"sub" : "263DFEBC-EB43-46E7-A4D7-398C5D161190"
}
If you have a claim with a period . or square bracket ([ or ]) in the name. Then a backslash (\) must be used to escape the character. The user.claim for the set of claims above would be user\.name.