{
  "manageEntity": {
    "action": "Save",
    "entityId": "82851",
    "entityType": "Track",
    "nonce": "0x44b624614182323c7833f53c0c517c9b6884cafc24be13554c32b842ffb12a76",
    "signature": "0xf1d4983caafdab913d26c78cd3b4cd8657c18a6ac7793004f66ca6d0c8c3451c674ab378321940c228925de7ac7ef5c46de4e266d4931ea159a53f0afd03a0261b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}