{
  "manageEntity": {
    "action": "Save",
    "entityId": "1162186958",
    "entityType": "Track",
    "nonce": "0xd1c0722a4c682ef61eb0e1c093dd4d76910a7383644f54e17f63e9040c71792b",
    "signature": "0xa89a25123a474442c0931e60ef5465e0bb53b60892afd17ed0d3ce54a70a653e49a3df152cf9eafb55e80f2b2c27d0ca985f452c2845dd41e4a7f6714ff871681c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}