{
  "manageEntity": {
    "action": "Save",
    "entityId": "802825145",
    "entityType": "Track",
    "nonce": "0x445c0d24be82544720f359309ba99aa72cc9798adecd963fc78505f5a24227a0",
    "signature": "0xd644de9aa88a21d395c0d09b204ef0af533de6e94cd0ae0892ee956477dac79b667c1e62fffea2e064cdd12051a9c2f63eb2c0a050e2a62701191ba004675ac61b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}