{
"manageEntity": {
"action": "Save",
"entityId": "1646317946",
"entityType": "Track",
"nonce": "0x2f9074229ff0ea3593516867115c246b71b783817d11562ea8975cc6aa434f73",
"signature": "0x81adbe0cac52d03fa6791658793c4e63ab249d8ff406c5ad3d569a78e1381faf5b4e4b47182c1eaf921fe6c875a9dbe8e0c092314e1f59e77939585e0c31f91f1c",
"signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
"userId": "377610060"
}
}