{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd549b8859f22c1ee52475476cf628698331f8c0459649f3bd79244e293e7e553",
    "signature": "0xa5c83db5f22b97b7c5cf6983225f4c0b28aa19e6b447cade60a14707a50a9afe53811021b7c431f3b06f263069ca24bcce5d3de1b165930233845210835b10f01b",
    "signer": "0xc115005361e4e9d1e6142CF13E753626c88B7d2A",
    "userId": "702887576"
  }
}