{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "393513270",
    "entityType": "User",
    "nonce": "0xc2823e5719c21ee89080a7f5196512080b9db45b8ff5a80eae93dc32453f8794",
    "signature": "0x3891dd0e39a2cf53b1e8b4a338c9af5e85430850a95af95acd5fc82261f3c01e637f56f228a81b8c6d49c527d7f318cbcebea9e9bc0b3f422c98e9046e1aa0611c",
    "signer": "0xbDD81E9E79ce6c0CEdac73ACdbac6D68f141F95A",
    "userId": "344325300"
  }
}