{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308640",
    "entityType": "User",
    "nonce": "0x88e84aabf21c15742a93b1f8e961e47166811a35fae9f5f56b7d5628e727e92b",
    "signature": "0xb4e87957fc2b08b9a84160218de92c22e8dfe3af7084ff6204370eaf4906e0a018d973ef86e6e9f75ce6c5b74aee11940abc5a3a5251801b00eb10b280f24ca51b",
    "signer": "0xF51BBf2D093bbC94555bc2299Ae53Ce8F7963374",
    "userId": "38277"
  }
}