{
  "manageEntity": {
    "action": "Save",
    "entityId": "175020485",
    "entityType": "Track",
    "nonce": "0xfae9d4320a9e92698816921f581acb405915ebfbde84b6b6839a624c071e597a",
    "signature": "0x533582325ac5032a5bd18e127a243f21d3813793f40641d267fd589fe8bac9ba008e9f402f18da4de88ba50b9fbfc419d3141ab2c11c6edd25b4ecc9475c42031c",
    "signer": "0x92d3eeF18F09b6dEA8B68410222af4813dA7727F",
    "userId": "719754"
  }
}