{
  "manageEntity": {
    "action": "Save",
    "entityId": "1117651372",
    "entityType": "Track",
    "nonce": "0x0ff5b9ac1aa9f72c7338e4e39eafa1143da10cb096e3ba215880c147f01bed45",
    "signature": "0xab90dbccf27a193998eb43d31126d861caddc3dd8441240ce45e431725eca51711bf6223295a9a99036f4831cb12eeb829a628de3a386a6e49213fd02f130e0f1b",
    "signer": "0x8a278E79c8E7e655B94c3e6798972A44Daa2c6ad",
    "userId": "24098924"
  }
}