{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "230757098",
    "entityType": "User",
    "nonce": "0xd173bb731090f61b095c56f4b92a0adea5e4cc567cb5a231601d2ffd49cb000b",
    "signature": "0x44f219223aafaff96c14777d604c20895988dbaac465e91604af104829f2a8480314d9db39d2e8e8d858e59727c996b31afada2f78e2af3148b7f3fd3932c7301c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}