{
  "manageEntity": {
    "action": "Save",
    "entityId": "697739562",
    "entityType": "Track",
    "nonce": "0x614fba87acaf3de38c624c7ac42950f232b8b586496f6a719d709ab55a3f7d59",
    "signature": "0xda27da903e04a213d07fe0f420a267d13b483949475dca10173c649f1b6fc3eb564637d5ac4bac03d1920953115905b89110c09dec1318dd9b23d5917cc1fd101b",
    "signer": "0xa82670FA9B885fC5E3790543627F6F4A7A5e6D65",
    "userId": "797142451"
  }
}