{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "237191",
    "entityType": "User",
    "nonce": "0x7643fe13fe0039c5cab73d94c917f8a171e802f83c45a012b42aec706779d352",
    "signature": "0x4e6e26d4948dc70b0b8842e4d7f2e89828f738810562a45a5d5c942e82f0ced11630865c285f92aa7f5d4321cb7759f58539d4c4e9bfcd8cb9280f583d74680e1b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}