{
"manageEntity": {
"action": "Save",
"entityId": "1812269894",
"entityType": "Track",
"nonce": "0x68972c65433f93f2e4334baec56aa7d8e9fa0252d94630467b909e0c4fd5b969",
"signature": "0x6cc22bfa68afa5612879eb13d316bbfbf6d86cd3e78214a411d2e9aa030b6ac82a2e05896a0ce025b609222115428e0a98961884684a70ba63e9d20e389c3b751b",
"signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
"userId": "162770660"
}
}