{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2258a37750246d66e61bf12130b807598ad6e0dacd32b579629c4f9655930e7d",
    "signature": "0x5503f7da1ef63253cfd06a01dafd220be0555e3839b4a356fc00b69e299dafcf347d1fb5c014de81f12bf93096fab5911d5115cf190cfd93b223f3ffe88ca04e1c",
    "signer": "0x2C4DB7DB5E5E0C2B51D2944aB8F283c16d49B898",
    "userId": "84949150"
  }
}