{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1ad7bbfee72426f052420b865786c79b7a90fa5c337c7f608c75a0ce7f2d1ea4",
    "signature": "0x9b4375a5dc323e9c531149d4cc09f3b07517722bd7c195636db3ef8f7b4c09c17a4940808199a411bbfc8adfb3158e9f6a3386bb5b9afeb4ce7ca4cc63bee7ef1b",
    "signer": "0x0fdbE0966d6f65E3DE225D16D06131c10d4F2b3e",
    "userId": "560630042"
  }
}