{
  "manageEntity": {
    "action": "Save",
    "entityId": "2095357627",
    "entityType": "Track",
    "nonce": "0x273670c1ac4444ea662fa66f053babef726e6b0b6c5bc608f48819156c1ef739",
    "signature": "0x1212c943f288dae26774a9d244fbd60813d6e5807bc8454d9f7037ce3cd649e3627d381b44bea42ed71986a4f55d2209e4b06fa08a56db9ec764978bf95a38a41c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}