{
  "manageEntity": {
    "action": "Save",
    "entityId": "781602426",
    "entityType": "Track",
    "nonce": "0x0c6efa7c899aa3b9dc6888b1f6e889ebb232673fe43885b2a41fa967115c9523",
    "signature": "0x90841e4125dff61b9c65eb27d10648efbd12b2c7eda498887de04dd15efe6f9e229a92eee6875d692ee96fda6b44255d35dc5760c930d52b20333d81315716fe1c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}