{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1686327",
    "entityType": "User",
    "nonce": "0x396b911d4fb9b01c36c98dd099346c182c357bd7611e4e4f070ffd1d81c2928b",
    "signature": "0x391185b5a3a937eedca6f868d03aedea90cf69622a5f669b9c1bea885ed887fe7afb47363a81e301009e19ca2b8db04254648b20ae9d24c242bfcff3179bc8621c",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}