{
  "manageEntity": {
    "action": "Save",
    "entityId": "190762",
    "entityType": "Track",
    "nonce": "0xfbb4ad032af45836abae2a7bceb3d3589a786bf68ff9b2c0c4ff4ad9f71d3cac",
    "signature": "0x350a249f7510955fd7cf1bf1522f52d6a36f60581a23972b9e3d90fa124b2b9852ca3119c2688fdaa8c7b8895123b2d7b1e5422c6e59a65b517b6e537616c3d11b",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}