{
  "manageEntity": {
    "action": "Save",
    "entityId": "1024996207",
    "entityType": "Track",
    "nonce": "0xf9de2e1819f347db7b9de9878a56dc767bd26bdfb214239efc31afbf5eb78b66",
    "signature": "0x8dd1ab0b475c6ccd1e80499a352404abbf41ef767c980e9296722f204bc8b35d798a03ce9aa0a9dc10b4741e82f5f0cc66b63711afc083d2a990578d895959b21b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}