{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf8429df6980e996ac15c821aeb1d3b7e954d54cf46c52e36133ab0651fd5b455",
    "signature": "0xda9818210ddaa1868016463db728ae6cf8cd6054f0b7c4638b485eba46faf34d308e679ceba18b8eca92033c27485c4f34984d980b1796e798a7c79eac69764f1c",
    "signer": "0xa52dA0b82173f310073Ed599CdbC2C8bc5d29e89",
    "userId": "685243288"
  }
}