{
  "manageEntity": {
    "action": "Save",
    "entityId": "626677720",
    "entityType": "Track",
    "nonce": "0x70ff5562a6a5139712d6240831d5ef2d054a7d33a8d628d03d189bb534baacbf",
    "signature": "0x9225f5a7f4ca19e0875875bd7ca3f5dac225af04e06a4b59c1d411f316a70f6447c44e71535a2bbc797d4a471e6165a2a8fc256c5698ae76c0cf764658282c3c1b",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}