{
  "manageEntity": {
    "action": "Save",
    "entityId": "1009394665",
    "entityType": "Track",
    "nonce": "0xd1194f7adfbcc10a2b421982662dd0695915a8f653fe0c9ffe113556c24e53c9",
    "signature": "0xf33870e61a9eb19f8c02561f67b21fe7a8ce9413de84a81eb31200f3e1dfe8f61ac722e9dbd4bcb87f74b43f36a4b683415121dade2247f5f1f35b40fdaaa9fc1b",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}