{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb6b6d4e61631b03e915664d5e43c6cac8e2e87fd2ecf40faa3bc1121dd959c93",
    "signature": "0xc3698f3165a2adea548a489ca37c9e9f691c56a4dc4e52c5aa52fd086063ca3f24590abc5721355a1bba2fd69ec9ab5081258b676bafbbb32d933ea8769e4b901b",
    "signer": "0xEa18e4A421681E765a3c05b0dd4425b850bC70ED",
    "userId": "774002293"
  }
}