{
  "manageEntity": {
    "action": "Save",
    "entityId": "367069082",
    "entityType": "Track",
    "nonce": "0x4fdd72dd4683c710c3ffd1fecd9a492d3503ac240ba7cd8e211b7e68902bca54",
    "signature": "0xabb44ed9c09e9714db606c4cd24e26fdba42776a5f8abedb68b8064dad17f824357c4122fca32a57c5532a38e0f4f3fbb7f2e50332dd22bea62ad0e38b9243501c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}