{
  "manageEntity": {
    "action": "Save",
    "entityId": "2092693884",
    "entityType": "Track",
    "nonce": "0x923df7991bf067e4770c7f91c0c8207b51290ef1ad4c2c71c0f7511448bed8fa",
    "signature": "0xc459ba44d56df1435d94efea73e2b8badec8c2ab99fd24b0a4e01a4376ca94654825eca05dc8583e36074cd48a37f870d3de9e081966324b40f0a4f85e78ef601b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}