{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54988",
    "entityType": "User",
    "nonce": "0x881bcee29c8c099022ff60fab43f9c1df2a3cf37eabaef22459fc8e6c9378d43",
    "signature": "0x762bfcea2fb16f7e3473ad72028328718083323fe784647799e5dd6c0deb87a3456ad27f56ad27bc8eea454ba5c399cb1250c8c8bbbc4c1baf81a0adb137caf01c",
    "signer": "0x9d291c3d255b974fe494F9679cb470BC6Ec7CA05",
    "userId": "905328931"
  }
}