{
  "manageEntity": {
    "action": "Save",
    "entityId": "533460693",
    "entityType": "Track",
    "nonce": "0xa92feb8232a0cb86ae95e5264e9a3bd95485eb98d6d0bd86ff647b9345b641e6",
    "signature": "0xe620d148dd2a0975636dad99be76ec7ddff1c726cd08a246368bf626c22c67c61183f4c7815934417dba7026ead48c3ab93f3d937175d9b089e8b536c1b52e7c1c",
    "signer": "0xC7B16Eee24C03712c67aa884907593f4df23db87",
    "userId": "56534466"
  }
}