{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "294529",
    "entityType": "User",
    "nonce": "0x7059da4a9fa2428129bc6894c121b0a2587f06dd6bdd005e5c87f03086d02748",
    "signature": "0x3a7369724a486fc6016a8c8be362ae38f35a4455bdadb4580456ea7db3db8031336dfad6d6fef2658bafc35b3abde9e8ec278cc307df616cb363bfa1056d20821c",
    "signer": "0x1ABf6DD41fe1E6b1C2d3A69859a25C92caa31b32",
    "userId": "17689"
  }
}