{
"manageEntity": {
"action": "Save",
"entityId": "923299403",
"entityType": "Track",
"nonce": "0x92463a508c36b83ce9b7aacad35f5e5c815ad9f54896c547003c36fd22304f96",
"signature": "0xe3c103b3fc38a7b928d9a3bbf63112d319cb1a75431b504d82b7e02e7314adf5068579ccb24165eeb97d13e6fb7ed03da3284923c7ace894bf0dcca7a83cb2891c",
"signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
"userId": "528688046"
}
}