{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x19f7176a515c943e70f51b71de9932866f4c41ae82345f2814766ecadb683c78",
    "signature": "0xc4a10de3e8a403b948aa09730c5ff5507f07f508ed1951db279a5b4b91cefb637f3784d5d37d616ca84a59b2010cbe881b1999ff92e9bba1f61b74ad24f8951f1c",
    "signer": "0x614b7F07373f00BC0ef1aA932dB130Be0b16a39e",
    "userId": "991154973"
  }
}