{
  "manageEntity": {
    "action": "Save",
    "entityId": "1635326308",
    "entityType": "Track",
    "nonce": "0xdfb8f81beb6e99d4d09cb9c1a36b551e3486f3a757331b56aead60633f72e3b5",
    "signature": "0xaa6ecc3b20d21cd4d9449cff8c6fffd3582852e4e8eae24ba322dbd8ab61778f71f2be5adfe4cf36f404e4625a4529827532cf81b809f1437818dcc0778d74e21c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}