{
  "manageEntity": {
    "action": "Save",
    "entityId": "953117865",
    "entityType": "Track",
    "nonce": "0xe9c858e9c43a88f74ed1bf1baaede3d212d512a285ace1c7828d5d6f68b81327",
    "signature": "0x6e5856e7d87ad7943440aa585c6d140873b928344ffebcf9a0454694acda99141976fec7c446ca7678f6d17dc129ddf7bd19a80d26c2c6e0f4407ac8eab78ff41c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}