{
  "manageEntity": {
    "action": "Save",
    "entityId": "1050010547",
    "entityType": "Track",
    "nonce": "0x723168d92428a77c3c32a5999df98daff692a37f35130cac2e45f062b614ca54",
    "signature": "0x64450ef5f6e2697428235f7b43c7bb5543d4ca8a7481573dceb896a7c3664d9866ecba0d83e928d14ee661b4e5e922e58cea9d1e39feaf78b11652c48d25ce871b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}