{
  "manageEntity": {
    "action": "Save",
    "entityId": "1114746",
    "entityType": "Track",
    "nonce": "0x5586614540f95ff25d29671c94bc982d5ee42f0ca2b64a10d61850e6c4536517",
    "signature": "0x829627cdd4e214cef7bb324090be30fd27980239166ac6b46ab2bb8d7335fb773cf6ad87aec7beffa437c58f47b46e5f0aee2251f33848db62042067dabd3afd1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}