{
  "manageEntity": {
    "action": "Save",
    "entityId": "348232242",
    "entityType": "Track",
    "nonce": "0x71e6ac0b4bf16cd35d0d6f5567cc73298b1ab90cd0d4d8a8885e1f76f5730ddb",
    "signature": "0xac9bf819879245493838288f7cd703e61fafbdc6eb56e036dd06c1621aaa0d125171117db81f95bc81517a0838afe064d2d6de1b77638957d2a7d53ce95219a21c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}