{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "326049483",
    "entityType": "User",
    "nonce": "0x90408c7cbd5878c1bc5a2eb0406b16af860e2764460232962dacca63d0973d52",
    "signature": "0x07216667731e61c406d8eb6859bdd48b65f22ceff891eac23a8d6a921da88af54fadc47d3cb5d1d7cf1d20e812e5eb0c346b18c206732bb37949ae4d2f4c65c11c",
    "signer": "0xe56da5Fb5AAF30449E9e91827cc7A25B4EA876C0",
    "userId": "399987850"
  }
}