{
"manageEntity": {
"action": "Save",
"entityId": "1288904119",
"entityType": "Track",
"nonce": "0x57f6a5584484e979de8aaa4cbb6df65f87e0b913136f063c7b3e5836d602846b",
"signature": "0xe4ea082d90f7d02ad9e414d22e6c8957f2fb2f66b7dab9835ddfc93c4105ffc2054ed485aea8312ed43dc1a4e64fc356272f7bd2d2425c68be57868f28476c4f1b",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}