{
  "manageEntity": {
    "action": "Save",
    "entityId": "2006358402",
    "entityType": "Track",
    "nonce": "0x56859f06e2b335020d424c3910767466d29627c3d7054e916b2785802cc456d4",
    "signature": "0x14323e6678e50e683fd26353d723864b467d5c9aca11729396f7a02e70fa2ac00788a5429eef48aac0412caadcba465980498449f2cab41f9bb216c109db67191b",
    "signer": "0xcBFBf860488b647E167A7020ac01A0A0c34Bf981",
    "userId": "4601100"
  }
}