{
  "manageEntity": {
    "action": "Save",
    "entityId": "192321012",
    "entityType": "Track",
    "nonce": "0xb2f7b5b62135d0592bb43756cced81b375f4adf78fd763c86551bd2f637fb3b6",
    "signature": "0x3a1719f8331d23c940cf76710b87158ee3c010851f78943ca732ad929d4112ce24cdad08b579307d1b2c56d1f00737eab494f3118633d655c597944ef86a34ae1b",
    "signer": "0x05aba01c97C4F182D989670622abE9c797782dD2",
    "userId": "508263176"
  }
}