{
  "manageEntity": {
    "action": "Save",
    "entityId": "1019776026",
    "entityType": "Track",
    "nonce": "0xd9b4ec16013ab30dca9651f2a7e87d3616f2058a8222abe522d7f2af85b5e313",
    "signature": "0x1088ae8c5e864d192bf85945fa46e92ef595362919adfef81917f9f5ac947fba33e1521f9d410be682ee82a858674794ffc9d911e09f4914c235042a4bc19df31b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}