{
  "manageEntity": {
    "action": "Save",
    "entityId": "1927",
    "entityType": "Track",
    "nonce": "0xcde3453b81d0169c49f5e0ba6c98e32404d4da2ec10d82538664757e3065900e",
    "signature": "0x95e56899fc2bed15a7f93017754e5d920fa279861a46de4b1c58963763056d9627d847fbfb4c077e5496d8536e6fbdc12265fda5994a50af8ae2761caf64f4d01c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}