{
  "manageEntity": {
    "action": "Save",
    "entityId": "991396",
    "entityType": "Track",
    "nonce": "0xbd9b640eeaf5a9dcd5609a2a606c072eda624cc030d91027167200378f48114d",
    "signature": "0xa3e41f82f6befd5f165d35533aaef55ba56260876d6c2d8aeb9c9787128251f42cdc0665e968ec9bf783a3f77a5513838e45cd5a3e3e9206d6f4248780815ebe1c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}