{
  "manageEntity": {
    "action": "Save",
    "entityId": "1121120002",
    "entityType": "Track",
    "nonce": "0xe33cf437f5eda4a2e8275e9d171a41ddfa33ea5f51d6b7b880934abc1585c347",
    "signature": "0xe45ad49fb2ed9ec05ed3e9ea14b80fa701ba2cdd2945bcf95cdab92cb0c3a8d0476c34c08e77141c2d92d84a9fd974cd62cad29222a42db563bf8a12b5fa681e1b",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}