{
  "manageEntity": {
    "action": "Save",
    "entityId": "317345",
    "entityType": "Track",
    "nonce": "0x94f0b86a1b4c050642fd77b28c8c9d0b4dca1c2f4513fea85aa2815aa351a7d3",
    "signature": "0x1a04583473345593c75cbeaf233c14941aa2921885ad6064ab76322a10252ca85f6335d4efc53056321b8f8ffa20028dd5cfba70dffcfac547345e2dc89f34321b",
    "signer": "0x90CBf7c9BBF688fd9Fa4029B96e1BC32b270cA24",
    "userId": "711459379"
  }
}