{
  "manageEntity": {
    "action": "Save",
    "entityId": "992210163",
    "entityType": "Track",
    "nonce": "1792359025633673359",
    "signature": "0xa21e6a6a4a5d329c3dfd335a785efe86e8bceaf3c28f857be4fb40c84fe4e01401333cb28d6044cb30cdb334f5fbab0e591c98cc6546da79ef895d526fb5f0df1b",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}