{
  "manageEntity": {
    "action": "Save",
    "entityId": "1692127523",
    "entityType": "Track",
    "nonce": "0x474bcc90e8e4b6c4564905f1d6db6152b3b599c70b1bdc27b2f4f9a0af7fd870",
    "signature": "0xfaa3431bc324679408f39de2cd6ee12cad7fdb2899de1cb25a2a945a9a76774e6953a16963127afe9d0b6512315bb0520b9572b66d9bf40f69e0f20a4bf93abc1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}