{
  "manageEntity": {
    "action": "Save",
    "entityId": "826365049",
    "entityType": "Track",
    "nonce": "0x4735b40af038607f397a4df3629119caa8ee9cc71bbf355320206d3ec3f21074",
    "signature": "0xbe800d695218c34df38f654720336be0f5306e7ed7ab660660959d11e31b778616fe7aa844ab506972ff43c71f5ff302b049eb8d01b9b1a76ec10c0f345f1f141c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}