{
  "manageEntity": {
    "action": "Save",
    "entityId": "264045",
    "entityType": "Track",
    "nonce": "0xd060092e12ed66f24b151b2e5cd9421ef3279c23ffd593f6102e4ea57f87ac48",
    "signature": "0x38546bbc6435af9782722c59580b4252fbef6710c5a1c58a75b2ed27bc8824242f5a35d898be4e2183e9c1981d1272651b46f70c0f83474ee2fa4d4a6104e5a01c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}