{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfe8fdf117628ae4da2ba33f5fb886e2c6751a7ef28167bc5ed65cbed8aa1ffa3",
    "signature": "0xd7300eb136f225d6c0164d087bdae52548163af62f21b7a1bda8b1a0004f15dd474b5f45b4d70161357dfe716ff6ff82d8309e3cc29f06008d9fe9ac5fa05f971c",
    "signer": "0xbb4641dfC12E8AD288621B32B1400b84c123F85e",
    "userId": "712942443"
  }
}