{
  "manageEntity": {
    "action": "Save",
    "entityId": "1263788669",
    "entityType": "Track",
    "nonce": "0xc6f4bec1b3779b4d60ec8fe5fc59fa11479a65547f922d4268ca3cc323ff6753",
    "signature": "0xe5a3b3eff5519d3055022c99c7fde5329e3c1aca75415ff408a293ac254926c15c063f7491714d28831c93fc0c0ef182613a7f4d1c44f37ae8daa661a81631de1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}