{
  "manageEntity": {
    "action": "Save",
    "entityId": "1045987586",
    "entityType": "Track",
    "nonce": "0x26325792f21f112cc122af36084f83151ec7f3256812c7a282f5719520eee48b",
    "signature": "0x615900c11d30bf12c682aad03c2f659279d183e36c1820937b85ef1b39df40ca36189ccea5683331c1bf784632b44fefcb95288d846151ef1bf4067ad98b1f321c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}