{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xab44181b0238da0c1b557a5835fcaa0d6b313031c6e5d30fc80e6979c38f9d0b",
    "signature": "0x0c952b89a2d52f5c2354f559959653dc357669d991e51cdc1ae9de356163197f66fdde24cef04f0022433f5f324bbd2986e827ef9659c429d106396e709fcdfa1c",
    "signer": "0xE5c3922424A1B896ad08ED5889f36Ca5DC40660a",
    "userId": "229327490"
  }
}