{
  "manageEntity": {
    "action": "Save",
    "entityId": "1999206153",
    "entityType": "Track",
    "nonce": "0xd7e2b45f38a80a84c147a59c6dd5fc786694ae891c13863bc92bf66abd4286b8",
    "signature": "0xec32474c0a72eb98801ea6c285d8bb45710f4243eb884c4890f4019178ff49db403152621a852da72926f938a07b9366e8c147c3af3ce5323c6b13870ceae2361c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}