{
  "manageEntity": {
    "action": "Save",
    "entityId": "368632220",
    "entityType": "Track",
    "nonce": "0x054c8b634227b655166d16d3e55ade69873163dda439e19de49c5f12300a719b",
    "signature": "0x76776a19bb04bfaaff00f5b767d91a033b2f68ad9c362f7994b7b8a9fccda2a524ce3cc8366d99330b4aa9f73541a37699e97a9855880eac0ea50a90476c257b1b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}