{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfb13cfe8252e27ec214bd2481375030d4ae8b5992207be09c0c6714b6af59faa",
    "signature": "0xcd462a289f3dcbe6026c389fc296e6deb9875f9b44fa275885ff27288727ea1470f10ddf71aa8e8b9f8a754aafcd38aec705403c305c88297184e3e0d878f2f81c",
    "signer": "0xFF2527E6A1Ea0651d212A131Df20a0352e21a5f8",
    "userId": "520227443"
  }
}