{
  "manageEntity": {
    "action": "Save",
    "entityId": "126715811",
    "entityType": "Track",
    "nonce": "0xca11beab0f9f63ed3107ab94aa3180cd588f51dd4b8ad20b3cf942550f083297",
    "signature": "0x735eb34c3c4a78013af2cda301230a0804c84de4aa043efb9b900dc63eced5892983bdac332ca2405820ef2196cd6b1d8a0a6e46819658178f826706dd394f541b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}