{
"manageEntity": {
"action": "Save",
"entityId": "1681065952",
"entityType": "Track",
"nonce": "0x8f766401843c5ae312458b6aba9cc1d08219b9da444a47a04aeafad60f1808cc",
"signature": "0x40a018da958e070d2c1bbfe9265c288fcd44b00ccedb0e7df5b4ed2c021d9a230461ea046c6ee613ee87508403d21e08e84f05c23c684e210386c3846668eaa21c",
"signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
"userId": "77551267"
}
}