{
  "manageEntity": {
    "action": "Save",
    "entityId": "1673717792",
    "entityType": "Track",
    "nonce": "0xd3c68a81a0d28cbf30e20d35155aa6188be45560d5fefd4dadca7150ccbd895f",
    "signature": "0xa13feeef8cd2ea56b8a61fbf2de58d198637d5656444092d5961780dac3ed7d20a22a7149033b2c9a7bea13d3c550321d3d006f6f0fa5e0c9930b14c3651f18a1c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}