{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "831499615",
    "entityType": "User",
    "nonce": "0xebb44084d19ae8d6b746288ac556b8b0245e755fa84d06370f32221b83ad3f6a",
    "signature": "0x5d9db38e1270991bd189ac8bee45c73171bc7940815482f96d01ed0c2f4e153156ff564bbc5dc1279fcb6e7c852642ec550600d89216e2e4dd7e97404088e13e1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}