{
"manageEntity": {
"action": "Save",
"entityId": "2138633081",
"entityType": "Track",
"nonce": "0x4b9df8bf0e25a56673eafa8b42c7755caa2ef2e5fc80a4abb3e07aaaebf7e216",
"signature": "0x7a14ba7c91257eb3d103fdfe810913264e56ddbcac88a9b2ff75f43996751e981b802a1d3889648191ccd8d362e7f4ef81c87b908fbc36fc95474a99b65672eb1b",
"signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
"userId": "456716469"
}
}