{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "776513",
    "entityType": "User",
    "nonce": "0x8c6b75c4054ebdd6326baea685b1b59e59833499ab27e8689666f6e4fbce1e94",
    "signature": "0xbec28b444c98f40edeecefb3698d9b672e520dd43f4c64938180f8f31f08dd7d09703383dc420ca343a48d56f648e6d82f88bba9b0436d024c6a72f6945a04821c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}