{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987974477",
    "entityType": "User",
    "nonce": "0x87c111a9ba324dc5f78f3aec63f45ab1ab068375ab4361fc5893a60e5cf2dc24",
    "signature": "0x725745313ec0bd66ca10c4d811338330c803dd626a6ef83fe0ebd62f52da7b022ef75a5ae84ffaa4f2a50997dc90e13168a41a0df977479f7e3b04f20350bdf21b",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}