{
"manageEntity": {
"action": "Save",
"entityId": "1324809896",
"entityType": "Track",
"nonce": "0xe72b9cff26de22ebde5c49384836db30daf71ebbfef4de3ed39d6037aaf7f1f7",
"signature": "0x8f8eddea1d52ddca2a451b52e78416628956afa66fcf39c943ad9b0710706fcd38051caad28ea23361024cdec534c1cb176dec1a6d85f34d3a49864f9c27e20e1c",
"signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
"userId": "77551267"
}
}