{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa43f11c088121b157cb030fbb8a124a46bd7390fe7698af4ebea7bb258c92afa",
    "signature": "0x421d38ba90e85e3e4627e19559b44ac507309a13f504cb99a15e96be438afae91309ce3ff3e3e4f8006189dea0bc138095fa6e387753022ef0577480f33dd3d61b",
    "signer": "0xa402029E3c079Cf277D537f9aC3FE9083e4d5a21",
    "userId": "346502740"
  }
}