{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398713",
    "entityType": "User",
    "nonce": "0x71086a2064a6a351ee146c618c9aeede5a09e7b09f95a3af8609480c81785575",
    "signature": "0x745926eba15839f6aaea5287ca70ff7843a1246a928341002332c7a03ddc36e25f91191a4688cd477ceaff97eb775e3897950efeca847bbf7c0df66ef263f7921b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}