{
  "manageEntity": {
    "action": "Save",
    "entityId": "1895032017",
    "entityType": "Track",
    "nonce": "0xc526bd8b5506bd5b31527fc51978b192c00ad02385b89cac9a546c68851240ae",
    "signature": "0x6f5451570aae35ef1232ccf824fca4a6d833f4f6d55814dfa506ea86f05b1d3e217faa2c599f3aab344d0554f2fbb37f41fce762ecd27e225cf8e3c8b15bc5f81b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}