{
  "manageEntity": {
    "action": "Save",
    "entityId": "401747479",
    "entityType": "Track",
    "nonce": "0x35aae8f77576930a83d6a2ac5fec8bb682db799b084122f6470498be86bfdd87",
    "signature": "0xe1ade69b6e4cb4b7c2a7ad6f9d6984b85e876cbabc2cd6474391c22d7d243c74079d99eea2f16aa8e4c15b31f126ecfda76b7f09644ef465faad2589989608121b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}