{
  "manageEntity": {
    "action": "Save",
    "entityId": "1026019",
    "entityType": "Track",
    "nonce": "0xe15f2f7f8d5ed034578389f8ead0ea56341ccb7809fb000bdad54a7c03445261",
    "signature": "0xd48aca24fbf6957aa2ab10026f972f961ee9aa28b2ed79b10c522fc7397437d51161bd64cdb2aeaa0650354ba487e33767b288d34201b8d19ff34e6c017ef1451b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}