{
  "manageEntity": {
    "action": "Save",
    "entityId": "1007831729",
    "entityType": "Track",
    "nonce": "0x07980f7869999a8179b460068789f3072b259779ee05eeaf434ee27a701557e6",
    "signature": "0x25ab8c4d1aa963513dac8137f56a43c36212eb4cff28716f9292c5657d9d4c26106a7487f7633352573430d8af3eaa5185795451f359b8fa2a7a0d14e8ea96341c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}