{
  "manageEntity": {
    "action": "Save",
    "entityId": "36820598",
    "entityType": "Track",
    "nonce": "0xee673248ea157a92f6b51efd7698f77b6353306d2f61282045ccfa651bc5a729",
    "signature": "0x3d057cb42cace7e32a7927ddeb0456e87472b0214920f519dc6f35825e887de72b39dbaccc5770c9e3ae57ea898c2ed01f1d78123adb2d3200e9d42eaea6a78c1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}