{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf88e93bd3a01d9bfa8190667405e45b000c616576b0708fea80e6b204aafd8fa",
    "signature": "0x134df37c0468647f3c3461daa2cdb02bc28b91585fcd365c8aecbc851b47c2fe00ecfe57ece61fa295dad18b1ed544786b509a904b3f381c0b61abbb90bd63541c",
    "signer": "0x9DA6995C4684B4664a952293cc0a477b3509bE31",
    "userId": "328640212"
  }
}