{
  "manageEntity": {
    "action": "Save",
    "entityId": "2136104227",
    "entityType": "Track",
    "nonce": "0x49ced77dfe219c3fe77775ec7441dc859ea66843a7c486e4496d192b3f1c6be0",
    "signature": "0x443f0f2d18006a46c45d62f060db5e08bb1afd7e3890ef09a69688c5da5f23707537f50828bc47713b535f2f90ceb9e4b78d59cb5549dfc24fe2e6c35a561f131b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}