{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb4b1f0d889850b4b5458a602392507eb08c2a0d4fee9514c87ee5cfa5726f3b3",
    "signature": "0xd49c83b9029fbf78671aebfe72c18e579d282afeda4b386c91a99f41dc035c54492a61b23668b30344fee85e28c92d47b712714ff1a6f2b811830e2b3e1726a51c",
    "signer": "0x0F54f613C3B9212A775fA86Eda9a4bcF5993Ee00",
    "userId": "469177237"
  }
}