{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf138ee6275e9bef13b097bad7afb079e7133dce851571bcf00ad4f2da8cda338",
    "signature": "0x1772f7c193464387f63b9e9f65629efc10b63b81d5d98285d0e5ec9a193c5c692e5ee2ea31e4dafe0ff1d0b08faad5a30ca79c0528e37b291e8f6f4a384ee4601b",
    "signer": "0xAf7D15ED9BBa46daBff0bcA2b6F5388EC418680e",
    "userId": "70130360"
  }
}