{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4220",
    "entityType": "User",
    "nonce": "0x4ce60160123c280d6b7a342e8c72635f77cc78c4931ff305d3bdf96d79c430e1",
    "signature": "0x461ab7095cfde71e50b0d0798054e24c174dd5116804a6ad7fa0969efdce7a2230186ae6f046c36c251478cd97abbd979d3f17c451f805a31cf2935b782961721b",
    "signer": "0xca7c61d7Db568b81B8A952B917F45dd863B736F1",
    "userId": "144109"
  }
}