{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843904608",
    "entityType": "User",
    "nonce": "0x30e779b3c464bab6717ae9a30fed1e700fc0547842ad16abf3bb329f9b125393",
    "signature": "0x1346c8b55b3eeb87c0a6da67b9ba9914a0312bf8bc7724a041cb91a834f282216a913e9210cec021e2cc891d39a972fac9ca7f0fee330eabb52081a6fc319ec71c",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}