{
  "manageEntity": {
    "action": "Save",
    "entityId": "1074175524",
    "entityType": "Track",
    "nonce": "0x43729419a632bf037c60182b09aeb83c19199bbd82c891860858d5ccb840c02b",
    "signature": "0x29326b1ff4299438bbe8aa372fce55aae6b68e5fa78aa768da4d69ee5c0179417ec7136b48c2de740ccb519d9c2d101615aecb1921b0eda99a0f2f663905018a1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}