{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "215428",
    "entityType": "User",
    "nonce": "0xd9bf9c4eb686838c87f351c297386cd285fefc6725cc02cc097d678cdb01a478",
    "signature": "0x1c27b67cc5392c563a1c8577ce9080c9c9424ee62747c3245fb0efe915f3a92341c0ee26bc47d1c9bfd6c0a0019a7303cd7617b381269ddeb6f5c57db9042d6c1c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}