{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325172820",
    "entityType": "User",
    "nonce": "0x9a90d7dfe8e895117e3533270f210795a793da79ea5fce5a11ba8127e21424f4",
    "signature": "0x2b016e934f75d6964925071fba944905a90d9ff68477e1383312432c61d33b1908ccc6e43a395ccb9d5f7a0567eed4008a3da3d7f521648894595ec3de43bc3c1b",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}