{
  "manageEntity": {
    "action": "Save",
    "entityId": "1896450499",
    "entityType": "Track",
    "nonce": "0x7ca61b8f2715db10fb29931f56f212ac21c4eeefe0d40c921b312c729d2a93e1",
    "signature": "0x5e5498575f896d4b4dd3093e65eaea5cf3f802fd0ddedb808823d6c1e1b59914150fa37b2acd0547ef56ab37c21018a4ff82c6d7a2ddef0ae2aa3e9b9f05fcd51c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}