{
  "manageEntity": {
    "action": "Save",
    "entityId": "949384777",
    "entityType": "Track",
    "nonce": "0x59a7be2386aef80dd5ddb2dabd841895f8627fe77c26e50a2ee9a050b2f3d9e0",
    "signature": "0x13284b504751466cba1e43dc9777ffb1952fcfd399095eb675ecb531361c02903cbde873bab84d2dd3a8172fa5d6eec25e364c0fc72af2791f410a5519a93b8a1c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}