{
  "manageEntity": {
    "action": "Save",
    "entityId": "2024293134",
    "entityType": "Track",
    "nonce": "0x1c05574c04ccf72e5993b452924db3574dc347d2d3c83636022317d84b37ac92",
    "signature": "0x95bb1e2783207a45655e0b245ac7249ae6051497e84b40ed154025680b22f93d6ef27b56c011b367fe47989c066db0c634e051d7323d58a6acbe44cbac669c2b1b",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}