{
  "manageEntity": {
    "action": "Save",
    "entityId": "84206",
    "entityType": "Track",
    "nonce": "0xf93f7e7655a23d93263d0fad1348df28ce8c3701bd8b5fe995b73f16b6fb9655",
    "signature": "0xb3a6ead853516d51a0bf35ac3434a80e0f9fc789391335d92ec6ffa7045e6359739a883be889a5f8e3d3523e9d4548e3cd26d44b01dd6029af4b4b2125324a921c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}