{
  "manageEntity": {
    "action": "Save",
    "entityId": "1259699564",
    "entityType": "Track",
    "nonce": "0x36e5edbe89fc25b9cc471a1daa63e697d858ee52e07bb6569252e8bc8f62595e",
    "signature": "0xdaa1cced077ed5dfd8793867d20e9c1a50008065bf35ddf59551584e7bb8501e6ec981d4a276c8132573cd5ddf5975724a9c0dd08f18a70da51e3ff58ebf6da11b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}