{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x94cc3008ccc532d681d3e522773ed42d5fc1ff21bd709a38fb5e570747e92121",
    "signature": "0x6195b27000a810c380b6e8876ffbdd3149c6c0f945f2316a80ab42822a4307aa560506eb6569bb541604862b8598777fbde832ad6e35f6cb9292edb4178481f51c",
    "signer": "0xbd931A74035d80e3E2faF35b4027b8ED1C371822",
    "userId": "424921881"
  }
}