{
  "manageEntity": {
    "action": "Save",
    "entityId": "1110584667",
    "entityType": "Track",
    "nonce": "0xf2ed502b626275d85be7939a3eea315f8836965f758671f5d1cc7ed4450840de",
    "signature": "0xc23f66cd894be8a0638e86556b3ef0ba5d1eb3dd434880441b91f4fb58a87dec74bfc5883313d51cfc46f1b1e1ada8e3e870957a28960e0385106fb2e92689511c",
    "signer": "0xc4A500E17D812B285447720CCcb7F8eB148c91bd",
    "userId": "256479919"
  }
}