{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "480962013",
    "entityType": "User",
    "nonce": "0xdda3138da22a84ca881bd35b0628263b75b0e93c0828036214776e88d5021670",
    "signature": "0x569208a03067e4ac469651c0755251769a8fc9b59f97eaa106dc6d1a2fd2040a4cfc70db2d630f11a01a6302d5d7dc8f2f4244ab221fb53d28501a390f8a08ef1b",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}