{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "632918751",
    "entityType": "User",
    "nonce": "0xb4a8c2cbfbd899bdbc02482f00a0955819454836f983161eccd949a94fff7386",
    "signature": "0x9fb189493e5c3076a67fc85f8fa0ebbb64c207c6c79ff5e1cb7e5c5694938539521fe1dc41f6b2e553452321381cb92bda71b37c5f19615dbd87169ca5c4d6b11b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}