{
  "manageEntity": {
    "action": "Save",
    "entityId": "1436743933",
    "entityType": "Track",
    "nonce": "0x1f215d3a70b6d1d686b1cdda7665386106cc0bfaa841a8b4f964022a013cf45d",
    "signature": "0x62454408304b339f17db5ae03df5857f71a2e1663deaf41b7d86a34280db77290fd32c0b14a213992fbc7485ae9df18beb1fe78612c8e728d2122a7aecab25181b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}