{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x09c65da20c011b39eb10308b3d3998d2472077e3558c93a3ffe4dea39b83b95c",
    "signature": "0x9f134cff50b7a673d1681fc057e5e88032e3c71dd00d78896fcd049cc2108f3278b65277116c47e2dfa242c6438118867dcc0deb504240a27df545ac8402e2831b",
    "signer": "0xa48DB3b4393F96ddcF404C400e8e0336767845c2",
    "userId": "360423327"
  }
}