{
  "manageEntity": {
    "action": "Save",
    "entityId": "869095441",
    "entityType": "Track",
    "nonce": "0x712c58d8fdeb25b1a3731559b0647a15efb0af46bdae1184cd7c7e7467db4fe6",
    "signature": "0x4e2ad228c7531dcc42613ea343246b9dd81bc67a344fc8aedb44dc80691c40cd5a804b0864fd51a38c457de1ddb77ae2c48d995abe4863dbf70da43ec3a1fe5a1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}