{
  "manageEntity": {
    "action": "Save",
    "entityId": "1727032798",
    "entityType": "Track",
    "nonce": "0xcf25d452e3ed8b110fa6488bd8b5ddab56e8568286fcd3ada4e800e010855877",
    "signature": "0xf1850d46a3795a195d5724a8b2dd75f49dd69224e0aa465ef63a8446f4eb891566c9d818ff2cdf711f9ab375e69877376e1e4b8d166a9fce1ef74de23c2a072b1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}