{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55212",
    "entityType": "User",
    "nonce": "0x14190f94e0b775d826eb2650777e8b128b5e37cb9de6b7a1c3490fd42aacfbc1",
    "signature": "0xb1b97674f3b46a9a3aa1ba7e9f24825558c9c5e15d4b62c48395afed425e26ba5df5522194543ca4ce2454d3c04ee3e44e3601a7dc6fda3d60004995a8ede3a61b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}