{
  "manageEntity": {
    "action": "Save",
    "entityId": "1065932555",
    "entityType": "Track",
    "nonce": "0x546476c0e31d89ac7bf9d76690611c39006a143e9a5838ef8275ec8ef4b41b33",
    "signature": "0xd1eb493ab90565e3ebe2b69e2919e173002fcaf5b7dec49abef529a2cd1ce1ee777319e8806ec3f766868736cbf63bd2a573162688e80ff69157e1cc64c913c71c",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}