{
  "manageEntity": {
    "action": "Save",
    "entityId": "1327859602",
    "entityType": "Track",
    "nonce": "0xd31651cd233a35048205a8a57660089e89db1c3e3898895d0e11585992c067bf",
    "signature": "0x9db99895d40a9a848858535ee816f97a3d60fa4e1ce28ac3b2ad558d2162934d1e8d5bcb8ce999f6aea114dce20ee8dcf24ec4b5d72e388c53e02bab6ae071ae1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}