{
  "manageEntity": {
    "action": "Save",
    "entityId": "1761458517",
    "entityType": "Track",
    "nonce": "0x94ee8db38efb86eccf1b730c85b34d5eb08b771c75370d09b02244259a82f622",
    "signature": "0xd4d82fba16130416a12fad8a09eecf40dc92920d7f6abf401bb7ee00cef0f03f274e67b11f04fe5aedd688a1592413aa5b84511e61edfb96307f8991959f19eb1b",
    "signer": "0x7b52e6AA15Db4Fc3A84AFF2b12e5B8B128eA8610",
    "userId": "808512351"
  }
}