{
  "manageEntity": {
    "action": "Save",
    "entityId": "1417454959",
    "entityType": "Track",
    "nonce": "0x480ec28c7c4037985d0deb2deb19ef3c7b834d6b6196cb880d40d0541ff04b00",
    "signature": "0x851fbf7bd0c02e5250040e5abb4777e75d226d693d49af28b8a7aa6c7b8d8b5177716675ca31fa920606d7b6ee46420831f01f776cfb0f7908624d564caf37a71c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}