{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x80c5fc909a87121149122d427ddfecafa6f06d741423603cb875b4c023de1da5",
    "signature": "0x3f93a178c9eb1a15461f4cc4365c52ddaa39242a928e0b23c57e7bc3459a5efd02f5d58f54276f0119239da6503917b3d2962f1261de8c29dc98195099e769b11b",
    "signer": "0x5742B60db40171DF22Ad2Da3966d6993296BfCDd",
    "userId": "912235373"
  }
}