{
"manageEntity": {
"action": "Save",
"entityId": "1531181617",
"entityType": "Track",
"nonce": "0x8b9d4da4a43248f648db820b14a49cd83a04a79c0ef5eb1bdbfdf2e1f8343e58",
"signature": "0xd752af1eaf88e114c8cfbdbe78e8a74dbc4329ae6ddfacca402a4d5dff6babed0c654e9ab3b8db48edba069ba56f33e1b34ba30f18028bd572e57fbc533912411c",
"signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
"userId": "981716494"
}
}