{
  "manageEntity": {
    "action": "Save",
    "entityId": "834254431",
    "entityType": "Track",
    "nonce": "0xf48735fa4b408d962798ba55126953d64ebab7bf3165b97cfa6c9e530c1dfeff",
    "signature": "0x0031febd312f28537d421d71533864a6b9cea980fb49c785ba005878800721b90f48986514e3ed1ae18fba562adcdf4bd0d9b3d1da53cd540bd11a349a4a89561c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}