{
  "manageEntity": {
    "action": "Save",
    "entityId": "1682015804",
    "entityType": "Track",
    "nonce": "0x05a7c3cb68a1529edcd31f95d0baf50075a1cce41bf76fbb8b0dcb6a9ce7f646",
    "signature": "0xa70686d1c3bbdd6041b3856ea574fdaddeaf0f2d2711cfefd2a1eda8e115f4090ab4117e71c8eefdbaad15bc7200fec076a2265ab363b38b8fb312c22f78ecd11c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}