{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x48aee829dc0c26c4e718d0d521f7079b33ef74b3ec9bbad2288d7d8856a7752b",
    "signature": "0x915cc74b6e76a4d2b5cd5e372bdcc34f238e6cfe87e6c69ee557769261668a142a22e03f3b1c70c307d42c4fb23eb2300bdf0027f93242c5914e54ceeb9473d91b",
    "signer": "0xb810b9dC05c4A70F6644b18689bfFFC0cCB34008",
    "userId": "883736280"
  }
}