{
  "manageEntity": {
    "action": "Save",
    "entityId": "671563544",
    "entityType": "Track",
    "nonce": "0x1485cad626369e403a1e9b59871115ad90c17c186531ec5a1cf635e38c805c0d",
    "signature": "0x5ce30a08b458188b6b547dc3cc901745f3c0958975c3898f897f7d3c93a355eb3d982e5e38eb0528f973d4ca0d1998fe6b6e4cb32dc71f88b57f557c48c36fba1b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}