{
  "manageEntity": {
    "action": "Save",
    "entityId": "1088469307",
    "entityType": "Track",
    "nonce": "0x6b6ea1aaa76838427ceb6b0e96910cfecabb718142f2b228b7648de8628b57d9",
    "signature": "0xd417c242600d5e2574ef6eefda5a2e49b8831fcaff070a9c5fe89d54a9718a00350942e1e7ffe786a9722cbfcf14eede50ded952cdf5b327899775938d79002e1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}