{
  "manageEntity": {
    "action": "Save",
    "entityId": "396951542",
    "entityType": "Track",
    "nonce": "0x9f7032c51fe7b97ef35d6e8e489ffb3e35f0eb3f11b77b0492ced5a8124474f0",
    "signature": "0xbbdb44a77aaa44b37053f91e5366ad8175169476f178c12bdd535b1c040928811f55e89ec4f11560696b3a794c588efc8fe97e79b110291bdc22774fa9b389f01c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}