{
  "manageEntity": {
    "action": "Save",
    "entityId": "1536128984",
    "entityType": "Track",
    "nonce": "0x28da9f147b848fd612416e9f0b47429509446f434d3e670809094dd0ebc7a084",
    "signature": "0x15fd9e18880b97437f263597e84ffefde7291ca70bb3e354f4c49dae5f0298fe51dafe2098d63f9bf07d7e5d61dde3a819a880a4999c534c7284d7e1946f1c1b1b",
    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "52309"
  }
}