{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "939113546",
    "entityType": "User",
    "nonce": "0x3eb04ea3876bed6dba74a4d8a015307b6f91af565dbf38185e35acad33bbcd3d",
    "signature": "0xb71fd497586376fb89a4cb936682af3646ca0949dfe8f2690fbc986448baf12912b30c8faf03d13aef8a396e30d1e37812007c94ae52312b88742e1590f4aab01b",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}