{
  "manageEntity": {
    "action": "Save",
    "entityId": "1119571967",
    "entityType": "Track",
    "nonce": "0x53a8812dd375bb4e90b89201bc3862d7d6643d02f238b7cf6fb350b1bdf7f89c",
    "signature": "0x54c9bbae4262fb6091209818b5a69fd881351ecd2520c2a412179f9edeb4a5816c4273170ab94ddcac113d86a4909968863d937429deeee0dd34562296432e701c",
    "signer": "0x65EB59bb6C92a37Ff6b3c51d34c0aD3607F751cb",
    "userId": "305838"
  }
}