{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "999692142",
    "entityType": "User",
    "nonce": "0x6178f8a7ddf474926e2db0bfe0540237f00516ab99e8501e6724013b2b2a4f9b",
    "signature": "0x9f97b91ca61f78010e96eaf637bce84ca9f33d561564768837f62b4a4516988e67e8337c8844c1d3aa667e17d5c37b0757d6df3c3b92f7f344cb4b09d2e98ff71b",
    "signer": "0xA61Ec758eD62E71769712843066E0D2AF592b23d",
    "userId": "556255982"
  }
}