{
  "manageEntity": {
    "action": "Save",
    "entityId": "38680",
    "entityType": "Track",
    "nonce": "0x8158f2fd74129b37048239eefd25da8a966825e883496197c6b63c51c69db03d",
    "signature": "0x1f6b9af3fa029c16c2c4411bf4f4a9ea914922c596561f00716f7c231b966af9034190fd2a8980cafae969b6c6873bfe408291379ccfa2c1a275d3656cb75b8c1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}