{
  "manageEntity": {
    "action": "Save",
    "entityId": "680108044",
    "entityType": "Track",
    "nonce": "0xacb616c79077c37e292b0ca59177cbea491c3744b494f731a5502c64476337fe",
    "signature": "0x4ae6cbc80b1074b0307c85f0e0353999830c9c221a7316e7cdca1ebc8ab08ee5584f3c468f5b3bfb4f2f90a33ae015365b6bf886272c6a3247fe621cd2a9901d1b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}