{
  "manageEntity": {
    "action": "Save",
    "entityId": "1096142940",
    "entityType": "Track",
    "nonce": "0xa778a89e98a72dc50475b63ed90b1d11d68f5f917fa73063d69cb57bdcced6ee",
    "signature": "0x6312c75d3013723b88a59f56f566b959680fdf228eeac5a860b47906350c905252eb06c02d1e8a7a2ae79fd73642547e036ddb150c426f8a15e5e058cd56b7801b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}