{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf0ac49866249d3cc6ff2d8ace275bd0dc7a15b727cb64a36817eccfe4c56549d",
    "signature": "0x8c933f348951116c81b622798fc4acaba4095c6beeb2fd109759bea48240af05008b082fd31f8141cfc9faeaeb85c3177de52ec79e95349435513cf5514dcc631b",
    "signer": "0xe474004A95209F9FC96ab9499e1f93c72586b085",
    "userId": "93021521"
  }
}