{
  "manageEntity": {
    "action": "Save",
    "entityId": "224631160",
    "entityType": "Track",
    "nonce": "0xcbde5901d0bdf4b6dc80d7338959917c08f8a70ed8149845d52a45987bc673b3",
    "signature": "0x9cbfdbb77ea3a565a0719508287d2e589080e3707763617361a4bb7d79906c2e63ee831405a5411ac28fba65f655cd8c86dca3841894c315977885b42d74e1ad1b",
    "signer": "0xb51B50C9b7d88C66d31539161F4BA9Dd72a17dF5",
    "userId": "465531556"
  }
}