{
  "manageEntity": {
    "action": "Save",
    "entityId": "1825389292",
    "entityType": "Track",
    "nonce": "0xe4da1b1c04444707eee1e507293dc6a988db16f64a4f455b6c4e03c366e36125",
    "signature": "0x04395fba3d3934b54e09070e865712c2c6bb0c63191d524ca804a67dcdd5a19660d99c0e9d95edac2e7e6f15dfc385f0c5b1ce10e2996d16db1cfb166e1a27ef1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}