{
  "manageEntity": {
    "action": "Save",
    "entityId": "1095722589",
    "entityType": "Track",
    "nonce": "0xddfd175222bebd2ab439998db1cd761a6d59ab4557b9c0b0f5232ee31f90138c",
    "signature": "0x3bf55a97e1945bb3782572c7adc1c6e2a28a63aa5654c6b92c7910c348f7c69e2ffabf763c879262cbd4297018b7c0854f697c2c308081c6dcfa3efc3a6d53461b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}