{
  "manageEntity": {
    "action": "Save",
    "entityId": "1686989365",
    "entityType": "Track",
    "nonce": "0x49bb5355fa30187b36e01717b04c5ac310175cb3c71cfb44965bdf7f36577e74",
    "signature": "0x08d6a294798303b42a35665cee9a9ba11a2e9867da4345a9ffe764ed6d8ddf183d869d288f9a91f272786d3fe615725d52665c1fec0d3fd52b4b46687921640c1b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}