{
  "manageEntity": {
    "action": "Save",
    "entityId": "1723085819",
    "entityType": "Track",
    "nonce": "0x171d309ef2b02aaf698014fbaeddefc8569e3e15860fda067995fc9324f581b5",
    "signature": "0x9145e934ffe91582832fe3ad7fba249e62a25cba76d01b00689b5491469ea1153d4cdbd7b423fd16dce32cb68da7ab035c9bb94aa0e5b462aa8cd32c9b50425e1c",
    "signer": "0xd85E4A094e4C057572A9D525C9737051A17ab609",
    "userId": "696716320"
  }
}