{
  "manageEntity": {
    "action": "Save",
    "entityId": "181327752",
    "entityType": "Track",
    "nonce": "0x1f42e1aa8cbbfd314724048df039b84a940da6b21768cfb10c2735d650935293",
    "signature": "0xcc5265b2bfa882386daa155339bda40f2da6209284adae934ec08d486f905cde76e531168f14ad22b85d9eb96fadd5c1f1895194968bee4582928840ba60d3ac1b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}