{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144371",
    "entityType": "User",
    "nonce": "0x9ef42221ec44810cd229d0505fb7294b9a3f4f1113e8a264f188a8b2d6829f51",
    "signature": "0x21f0a9880d838625bd36bd503e937c4ec604aaf13af23ea42b39095be3bd03c60ee7fb7536f1a950b340bc1e49d196066032a412f1392439a87c173222edfa801b",
    "signer": "0xa0C10F709D3c5b2b5FecDEA05B821Ac58bF0c782",
    "userId": "641492277"
  }
}