{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "324542",
    "entityType": "User",
    "nonce": "0x10a2c6d8c37c47cecf85f972e08a7aaa951a1c668f206b20dba892a4eb87b35d",
    "signature": "0x8e2755d89181ad40cc5de0c0775c9339ef318856e0c9aeff35950ef60e4df6c00060ec97e655545aae02b207dc1698674ee82c56b35dda5589f2fa2721a8d3111b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}