{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0x5775369f187f3b1ef2d16f22ce2364a3ceffaa4d16a85b99d8cca45b99ec29e4",
    "signature": "0xc368f8494da958bfd6fa847747e5480335106d500a4a92ec7c23ff509b7fe75d5a3fd65f694dd866b2dfee0fa6064213176d76be55867767bef005c71a838d891c",
    "signer": "0xd12A323399559A3773F865c8F21031bc39c29135",
    "userId": "219968466"
  }
}