{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x942f1f7f9f64bf9bbecd3bc1096104c0667fefb73c9ff5b9737a8cc4ba311a47",
    "signature": "0x5faf26cd9a678cf5a16de930e577c29f50b4c2c5f068dc39c9708c944e6dabed1782c36068fbad4f2862cbd7e40bb30d5b62e8ffc9eb90abbab10886ec5d375d1c",
    "signer": "0xDA51D2CDA2bb99eA537b4989C946A1f7057434a1",
    "userId": "670505084"
  }
}