{
  "manageEntity": {
    "action": "Save",
    "entityId": "22613532",
    "entityType": "Track",
    "nonce": "0x3283b22bd0fd63386f1e681e3203546446e5c55793e0e27364e12c2dd79e13f4",
    "signature": "0xe01fcb9e5a645ace422c7a248b0d32abae12711720ae4ee29cc25e32214fc12664ce5c9ed5528e4381b049bcc63a9cd325a1d5ecafe2d8926bec10123d4270fc1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}