{
  "manageEntity": {
    "action": "Save",
    "entityId": "1358695661",
    "entityType": "Track",
    "nonce": "0x0e4e0d25ab05876f8377537e238c8206a8bd98106949c36d051d90f866033e5f",
    "signature": "0x478649c6c8ed2da03a09d4aa18b3b59fc5a8cd8fbd4d1d1a60712bcd12cc3cd902d82eb63807b08d9f9b3929d515b2cf0a2f5ec2a6aecf8c3cef854ca06408031c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}