{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "125044",
    "entityType": "User",
    "nonce": "0x3d00549383bdb710ed1018dabf509c6d2caf8573fc3bb42118abe28fcf1bc7b4",
    "signature": "0xd4a228d9447ed426dc34d214bb1b47ee3484059b2dbc2c0f67643b3124e304f348bccdbc7dd3ca7141d0a1d22e3fa646bd0a9eae4608c8b9b8f2833808d70cb61b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}