{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "338275",
    "entityType": "User",
    "nonce": "0x1cdee8655115a9c554fbbd399d2bbfe4feac5b9501e7528f1a6acea866b51c86",
    "signature": "0x37588ecf9cb2bb73ecdf4a06829ffdc0d9a0f2c5b0faae50f6b91df7d59bfe6e54bf0c74e3715cd7f7a30fc7037244fed29db57f7310c67e8b1a9e6d137fce811b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}