{
  "manageEntity": {
    "action": "Save",
    "entityId": "1156714614",
    "entityType": "Track",
    "nonce": "0xdbb7eec2636d9e41f0394a3990d727806ba67fbea16bb9674425253f88e4fd0a",
    "signature": "0x9666ba1e1ee54543ffc3e1ecb1fd801c6f9b77aceeb955a6417fccf3d667f3fb048ca0f59c31dca062c4d0e55ad20baa507cb5e9140c69b2b35fe8e0c27c9b9c1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}