{
  "manageEntity": {
    "action": "Save",
    "entityId": "135754",
    "entityType": "Track",
    "nonce": "0x025fc03999302981e8fa41eaf8fc8165a2f108f0dad38a9c448ddbb467d0b055",
    "signature": "0x43779632381aca5e06295d4e160ed9f0ee7f47509ad6da78da3f6934903cf6fd537e2b28fd8be879102844ae643a08858ca36eafad57629e9840a2fedc0a86071b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}