{
  "manageEntity": {
    "action": "Save",
    "entityId": "480243",
    "entityType": "Track",
    "nonce": "0x381b3b43aa1a4103ce40c398823051fa9089e1b75b271fc8a8055e3e8dc640fd",
    "signature": "0xdaba6c91b41f0b970a4f64995ec1098fe96c987ef057a9486e39fae934e96f440e6f9bca96c5f44dc64a6a14e10eb224cc97f2f5e721b159d0bc08529d0e33301b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}