{
  "manageEntity": {
    "action": "Save",
    "entityId": "55235478",
    "entityType": "Track",
    "nonce": "0x222c981a31c1ad06952ad9ce5ccb4439503037f0ac0eb5508614c7ab8cf19960",
    "signature": "0xfb863a82aa76e2431bc96a23d0dab19254d50d5222ae67879cc27f3428f9d41a59f0589a8fa178d116bd858e1513a5bd4ce47c53166192bdee90dc7679b7ff331b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}