{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "754921422",
    "entityType": "User",
    "nonce": "0xcd699358b5157851b22f6f75080b2dd3a2a9a09dcc3d593a16485da47d998a3d",
    "signature": "0x6a2c528583101c3b563987e738d9bda28924edb35e463dc870c6af3ab1db27454b9d03c1fe8ede8e55814755dac5f5d87f3b3fbe717c9c0c5bfb59efabf7b2751c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}