{
  "manageEntity": {
    "action": "Save",
    "entityId": "1798088080",
    "entityType": "Track",
    "nonce": "0x30b47479c1c3f55778d43f8907c50bce60ad360025867805eb3167e8bd00c322",
    "signature": "0x0a8333ad98f458185aa3a8f759ae8920078d21e050ef757c0cecd3a685d2cba35afc9765009a0109b41a6a8d912d8f6af2738cb668905ded1b72e8c8fc8754901c",
    "signer": "0xa185Ff45de6FF68eAa1d7ceC338cba250810134c",
    "userId": "54166466"
  }
}