{
  "manageEntity": {
    "action": "Save",
    "entityId": "169096",
    "entityType": "Track",
    "nonce": "0x5f1050c623e0c653f6a1303dcd1852f020b5bf852a418495ef04c819246d951f",
    "signature": "0x664800a510ad8598ea64b661333350253b92b0f07ed110a4ee4a6275b7f9bc30562c12ea129b178f9c1317417b39dfca7b20ea50eb1fc08c41bf2d12ead68a611b",
    "signer": "0xe270C91f9476B885124d6c0208211213dC10036a",
    "userId": "94825285"
  }
}