{
  "manageEntity": {
    "action": "Save",
    "entityId": "1263247959",
    "entityType": "Track",
    "nonce": "0x563c5f7000d256244ca1a27f78b8403cd394cfa4f99ea245fe0c2d3e59043e5e",
    "signature": "0xd00a5a5de9f9b371d911f6ff6d88a9dcf4807b4a1c36a39566196be6ca6b43f94486ee697dfe08f7e111d2101b4b2812045f976e950dba589475b2095d89b3a81b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}