{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "228403",
    "entityType": "User",
    "nonce": "0x4f37ddf69a51f1d69325bb82a38956461262eef8c088e5bdee09da1706d588af",
    "signature": "0x675106269024a3adee148e2d0dc2502b0a34c2a02d7cd449b7e8013c91ab933a07dfb6b65f71a4e3d7dffb8c85e4933c358a8294def9dd133ced3b1a04c35d181c",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}