{
  "manageEntity": {
    "action": "Save",
    "entityId": "160301928",
    "entityType": "Track",
    "nonce": "0xc25c111945f271084492837bf2371afca1875a068d47c60d0f3e93f6c4ffac5f",
    "signature": "0xd28a89830a18554c62e6be47a36c61eb0a0d57d491b240028f3ac1f68f88873f2622b71a79f47a82d989c634d17de7ddd804ff2a80024f5385a2bba9c8cab3de1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}