{
  "manageEntity": {
    "action": "Save",
    "entityId": "1076987495",
    "entityType": "Track",
    "nonce": "0xeaecc3ba9dffb021a3215209df1b51528bcb5026068eab68c2964c37436a02d9",
    "signature": "0x0252716f6c59b2e2cadec947a60a04eb515c9965a9f9a0085ac8d77e6794275f28a203d4297f0bc84a1654fba09072a6bd5559859113be48b8432b4c68bf5b1f1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}