{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "342841",
    "entityType": "User",
    "nonce": "0x175d10d1f8c4a219b63f5461d512d4776af57987a725fe9d0df369a85aaa8b88",
    "signature": "0xfeb06429531df5a6e43aa5b2a046c23a0c9c96d8aefb777a4d44ba1096d265a04b813044e57e05f865377a1f261d3cf3d58ab1660d80c2b11bb9eca296c0bc891b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}