{
  "manageEntity": {
    "action": "Save",
    "entityId": "79731",
    "entityType": "Track",
    "nonce": "0xaf9b76fd9297d402c3ca6a6e31e80d1c0177b4eed6c40004f9f9f12bf5bfcbca",
    "signature": "0x1258513958a0c96795c505010d9b50ff5d9b7457691ec21e1d1d5a4570ea7d271a81d097fa28b2ed105986603f7b819a66a9c9632d30aeacf8cd198a2e55e0ba1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}