{
  "manageEntity": {
    "action": "Save",
    "entityId": "192807",
    "entityType": "Track",
    "nonce": "0xba357711100c98a29e640cc5e28e543065b4f9dded659600c8838596eb1f50eb",
    "signature": "0xa87514bc43cd752be1fc4abac271029813ce1b16cea19adac6a8c297ead886fa7a6d699f695007c3b0c423da51c99f5a1d949091f1b018fd687b6124d58131e81c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}