{
"manageEntity": {
"action": "Save",
"entityId": "265693419",
"entityType": "Track",
"nonce": "0x98c2873162ae5c61faafbe2794155a1b3b7750992d3f4b894d5f8d3d0d308858",
"signature": "0x7369a46b4fc332003851f66092ec5b9cf46e17a26f32c4fad48a0b68d2ebf34a21707d97f3f12a70b261008bd4ca772d5aff20c0c08de622925b13d1f0fa415a1c",
"signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
"userId": "490478463"
}
}