{
  "manageEntity": {
    "action": "Save",
    "entityId": "1744879833",
    "entityType": "Track",
    "nonce": "0x353e7bb4617e6b46c8bd29df00902dcd0c4a9e83b0852b7799dc7c95fa5e136e",
    "signature": "0x26785c5458adeaf981a0ca8d2394c7681ff792dbc17a80fb1aa14fb43883248413cf8627aa6184cfd0bf6382044c67af4fb7e177868d22ce848502e034e3a94e1c",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}