{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x79d61f3bb403ea1966306ac4932621eacd759df09b6176fad804c64e52c319cb",
    "signature": "0x4d09970a700bbc006e086ba3888a0381eba19d9bc51096cf9c07a3fc946e99171f37d8415d19f45cdf2f7dbe0f15e1a2e578df469c865131e30b70599c93d03b1c",
    "signer": "0xa4AE20Cc8300aDC4Fb40b81249886848Bd27f0f4",
    "userId": "223152537"
  }
}