{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4ddc75a783559d49d5c3786ed80f9f8f5645d93aac3e36f0edbc6fdc1d3461b1",
    "signature": "0xda4b3a143c526965f7ee38e96da5822f4b3d0bef4534749fb3f2096b5f2756826908f3676873af9bc4766d63574643fbae6c2fe6a1f7521e0e0c4ba6b93b84d01c",
    "signer": "0x08600EA629E59088486bCED8B6aC1a79Dab2Fe0e",
    "userId": "315380741"
  }
}