{
  "manageEntity": {
    "action": "Save",
    "entityId": "1759703560",
    "entityType": "Track",
    "nonce": "0xf23106fb7176e753e96f0b84a280cd1f7130ef49e22612fecaad571de4b5ef27",
    "signature": "0xc2746dc803a26434fea819da050ce09fc4f80f5b7b43ddf1dd2e6efb44170f782514ec756a3dbeb6b565a1e349185b1d3c02397596217a139a839e429f5909251b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}