{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "89919",
    "entityType": "User",
    "nonce": "0x208a748c3890a9d0a6a203537111a777737d783bc15027e3aad5b5720e932719",
    "signature": "0x7b972118223c2229fb8b7dbbcf4421427507b34b51d21b19ac1ee6722cbd94d25f7297afb1366b1b45307034ed8ac32f69a4f7174a13d6c5a10a18cc10c62ca71c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}