{
  "manageEntity": {
    "action": "Save",
    "entityId": "1235860255",
    "entityType": "Track",
    "nonce": "0x658c1113b05a900b355de9827a419a30923313fabb5ae5d526f013041e6f070b",
    "signature": "0x04087bad772599203b2f4df05d1e42de4361bca676a4745c1d997071a11fbe745f446d6de3df787e024c4e5b5286c97c6bee36d81de88d8afb0f39b4c4b34c821b",
    "signer": "0x26CCBCaF2692cF90F609052b2Fa768d884Bc8804",
    "userId": "307689"
  }
}