{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xff2cfbdee5a345135ead9fdc8201bb21787e830e8cc2209c34ec8debc94d579b",
    "signature": "0xdfe393e76cc27360484a1ff150cdc51fb1edfeb7bd7ca64dca917d59114fcd1f35297862cb6327869a9311da0a8a45a04dd91f86269ad693c240ad7c5f420a991c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}