{
  "manageEntity": {
    "action": "Save",
    "entityId": "2078733123",
    "entityType": "Track",
    "nonce": "0x55babdbac370a69c2f0f12aff4a9166945478fec2e146c9cc0cfd16171b4496b",
    "signature": "0x0b4342604098062906773e39b45d989618f6f7986edb2d9b74366d414be1b239653a1bb3cbc64db21b7a9d4d6f5ea401efab152b6cb04cf1e725da2f464fca3b1b",
    "signer": "0x040493F2e63719EF50403004c458F157173E3165",
    "userId": "626944408"
  }
}