{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd199a67e6b29f946b8c23363604bcd617a85b4c37798b0b330771bcbe2fd763a",
    "signature": "0xf5c518ddadadb2093d18546811af75c1dc3c826b6df9becffe6a8e64697ee3ae3c16fc98a90c6b2d2bd199339ccef983c2fb46893951ad740b8cc5af620002fd1b",
    "signer": "0xa68b28f9432CbB6F37Ba0358C055F536814BA1c3",
    "userId": "645866028"
  }
}