{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xd7ca64c114feb6b9c4225e7bb9d472abe3b55eb46999dd028f9a9fa9af27ddb5",
    "signature": "0xe6fdac58a7faa5961e860eb78739b284203d171d1b6c691092ad58b59e4b590607a2bf6d93c551ea892d935877564177ec8a389bc609397eaa03f5bfd9ec80b31c",
    "signer": "0x3Ec98fFA47eF7773803b73964753B99Ae2D50f41",
    "userId": "545926315"
  }
}