{
"manageEntity": {
"action": "Save",
"entityId": "1596877169",
"entityType": "Track",
"nonce": "0x0da06ad3eb33edbc00ec5577c187f520a44b807ac320874c93304b4c444da4b9",
"signature": "0xaad9f7b0d33b7e8a25cdef1fc247f05e9e1855438562bc10d98ff0b73d0235a206c3719f9e5b6ea7018cc4aee845cdb163cf687929e833d9c57e33d0ecae42aa1b",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}