{
  "manageEntity": {
    "action": "Save",
    "entityId": "60168",
    "entityType": "Track",
    "nonce": "0x0bb9b8bc91ca3c2a105025f76e4cdc8ca4d4450ad4cf41adb6361f1651d41496",
    "signature": "0x0cc049c65addb40fef367215f894b9f3581b017117a89d44ac0a44b6563351bf6d7f58ac2ddf39f6fd14c267bad35ed3229ba65eea72c05b4f7b19fce5477c661c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}