{
  "manageEntity": {
    "action": "Save",
    "entityId": "1663230485",
    "entityType": "Track",
    "nonce": "0xf40dbe7155e4c4ed92e01b3a241efbee5306c19e4557f12b22e26226318f60dd",
    "signature": "0xf9c4a269bd8b32476801e6fd967274cfe1e831a294682f6ff3ea048ceb8593e00c4e9b156176c0a9f4331380cbecc5a784477946b1fc8c0614d660cd08a965bf1b",
    "signer": "0x4ad870a0C318214b4796d1464BC8Dc57C6b84C12",
    "userId": "408505072"
  }
}