{
  "manageEntity": {
    "action": "Save",
    "entityId": "915761192",
    "entityType": "Track",
    "nonce": "0x8bdc812fb91048394641ffc0e8461c56f3c588502874c61caafbdbef8a7930b9",
    "signature": "0x37d5be2c2172dbd5ec6ca0cae6d7be430120f0eb749876cfaef4d8c9a6476e861a47595810970fa54063292eb3b37804d66ccda91f68c16b914b6c463b879f591c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}