{
  "manageEntity": {
    "action": "Save",
    "entityId": "176853389",
    "entityType": "Track",
    "nonce": "0xa8c8c0bfd27d52bf9e219187931cffd119792b227775ae6dd216fe94cd64f35c",
    "signature": "0xb5f77556e375fcb8c0909580e27d40d0e32c8b72cfdc3a3637445118945ed37c38a19d6894d6ec1a85757756d4eb0728a977305415d0a6381e0184d299ce84cb1b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}