{
  "manageEntity": {
    "action": "Save",
    "entityId": "25351336",
    "entityType": "Track",
    "nonce": "0xeab688d8c5333dead9ee0c84013b0e65b6d5d2207cff5a94d6b89efd3d02c67e",
    "signature": "0x2dbefdc2799931293559cd8307c29996137d9d565fddad7d99e2bbc3a5ca6e7f7145738d713ca13f159025fbab6b265b313723eb1e74e33dbf4181ca3e0716ab1c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}