{
  "manageEntity": {
    "action": "Save",
    "entityId": "1675070469",
    "entityType": "Track",
    "nonce": "0xe62f29357c836bd4fe51646b300aab2fe88a1c785ccb06909e9f9835ba082715",
    "signature": "0x648efcc7d6c0178b7d40dd0b35fd8e8eee9558d99f4ff5280ec0dbb24470671759b16836d5d777033b20b96f3c9ef6ef2c0d606dab9953dfd60c8d36defaed411b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}