{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16411799",
    "entityType": "User",
    "nonce": "0x1fcd3cd9d15220fa37a6ffcde58335b38e8c0779740648c4621a762189cb9c24",
    "signature": "0x2e2f9a20a54ea3d2285a152f322ddd333d76f3d611b4904cf3f3caf5e5a058b357ad29343fdfb14445874b15672f25112abc8e193b262afc8f3deddb2c57ba551c",
    "signer": "0x0E6Ef8dF2F401D8918d603B82ef321D94A721556",
    "userId": "648802251"
  }
}