{
  "manageEntity": {
    "action": "Save",
    "entityId": "1088425",
    "entityType": "Track",
    "nonce": "0x0d80ec69a6aca9f45846ad1d461c4646b4ada3ec7d111d6e89d7e7e933c16d4e",
    "signature": "0x5524d3f9e94a0a9ffb3451da9469583cdd2c3a03df749b64322e2059beaaa843046b1c77c6c65645ecada41a243cac0da0700fd420e485e5d63644fa9cbda46c1c",
    "signer": "0x7848c1438a663A70aF2A2B1e61f7A9229dcc818e",
    "userId": "490080902"
  }
}