{
  "manageEntity": {
    "action": "Save",
    "entityId": "1746564566",
    "entityType": "Track",
    "nonce": "0x8e9d4f05276e6fdc40ddcd727554362347e1c672fe69981375149d9396ef222d",
    "signature": "0x9c4caebe2692b4a6326788b08caf49d6d9cb9ef92a862f51d5177b22b14f7acf63c925c28403752aa6a506e44627981a0478d5a69efdadae8f5419be57e960551b",
    "signer": "0xd85E4A094e4C057572A9D525C9737051A17ab609",
    "userId": "696716320"
  }
}