{
  "manageEntity": {
    "action": "Save",
    "entityId": "2041441827",
    "entityType": "Track",
    "nonce": "0x74be934572df90a41c8e6cf69de30fc257ace66185be646211538927c6844e04",
    "signature": "0x606ffa2d6bcb8df4577b351f48e5decf423a50455bdc0bfa9a3f8d77fbddbd5139cd31d6bb8370ba3db30997348a83eee0c63e8876452bf24538383538e28d981b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}