{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4ca8f8d2d3c8314822e70dff7c4452a3165c48f47c3c6b9be522436a12cec710",
    "signature": "0x8ca55d74bd081998c90a8311105b0700b153be90b3898c29b617f9f60007fff51e3cbae3282cf7353f9f988dc19ec8f0590cd94f02dd14d8bdf63e82835847e21c",
    "signer": "0x9851B67361957bfC1a2dC46Aaa1F49cA68Ee4f75",
    "userId": "281557683"
  }
}