{
  "manageEntity": {
    "action": "Save",
    "entityId": "998482094",
    "entityType": "Track",
    "nonce": "0xa80a8fcf47df21c92d512292e2837609e0fffcb417a2f4e5ec1690e6dedef3fc",
    "signature": "0x7f420f9052da1b07587e8e56c730ad564662a5827887d2f4f41983b759ab2776537e5d0dac01d904e037652680b00284e3de50a75ee1eeb9e6a7a138c6dfbfcb1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}