{
  "manageEntity": {
    "action": "Save",
    "entityId": "316917",
    "entityType": "Track",
    "nonce": "0xa4a2085fd729357098365fa50ca43e913be0ea2c0f9758c9ef533d4d5f978f77",
    "signature": "0xe7ae9bb598f83561c522e93a94977966bf702fbe83ed1bac5d10c9e763c96e3c0c988e2f41ba7a20387df2026dfbd4f8880eddca1e3a1fd6d2558243125b10cc1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}