{
  "manageEntity": {
    "action": "Save",
    "entityId": "2088031800",
    "entityType": "Track",
    "nonce": "1786178588901075355",
    "signature": "0xde2dd52ba338a4457d047571d6be5c6af737463a3f8336d5996857c2b05aa9ec5c819877d60f18305f912d710815ccc0869546d30c2a32f57c265ceb7a81016e1c",
    "signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
    "userId": "451691735"
  }
}