{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdf4297d543a8c323e8dfd603fdb78538e623d6d28934112c0222e6ca366b1e93",
    "signature": "0x20614a17d0677660d0388d161c30c4d23a2125085739d737728b0b522c8eecbe7222bd363c4eefff015283b2ade8e2e511d8c8bd3df3db24bad7b06b4444b2f71b",
    "signer": "0xE38b2EE55025fE4a187bd709bCA4f4a4AB94521D",
    "userId": "895414211"
  }
}