{
  "manageEntity": {
    "action": "Save",
    "entityId": "1958733088",
    "entityType": "Track",
    "nonce": "0x775a199dac7aff0014a1e90c3d42cccaf4281409aa7ad42e16ef16a0a81b29b9",
    "signature": "0x45f92f1248ff322bf31174af59d9b153a4361dca2e3cc5b4e4a573d67304843d525d8b917facff0d8f4ea2261553660a710926eb7be48e856adf1c2d2f4edc931c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}