{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343259028",
    "entityType": "User",
    "nonce": "0x5f42e0a41dd72278a371b0fdb0e4aa254c4ec25e0c23762e13c05cd0cde8d0e3",
    "signature": "0x0d2573c59f8deec16027ae17331c75509779c176ee5eba051b572c9ceac12b516f1e90401562f76f7bf4b06c3c0eb7b0348946af3a23d5b1b96e8451e98541f31c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}