{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57100",
    "entityType": "User",
    "nonce": "0x241a5bf77ce8ace8d03ca7968afef0c3c909e1f0cb4fbf69aa456755940d1940",
    "signature": "0xf2787ce2bf06551c0f76ceee01a1c19d11053344fd293f2eac4d12f5ca6a412367838ccb0d5f19dea918999f61d99f909b66a647f2a261a5b3ecdb26808430a81b",
    "signer": "0xC8f3057A16166dB45525AA8D5Ebf9380405D788B",
    "userId": "186668924"
  }
}