{
  "manageEntity": {
    "action": "Save",
    "entityId": "1162915506",
    "entityType": "Track",
    "nonce": "0xd5d224c43714515abf26ec68f51643f38a20ebcafa27358ecfcd9cf5f1cb0736",
    "signature": "0xeab318f18b16d3ef9606181e2705ad235831b62c368dc2891fdbbde66a7e6c0e016bd0fd42059dbd7dd88d4ab3a65cb7ffbb8d04028b48c53cf0ef2e36f007541c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}