{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xffe74d4b6793b23c71b0cdf40fa6edbb681381d2550c3c971cc2afd303b4979b",
    "signature": "0xf3a62c5621d69daf4a9c426a270daa64d69140267785a3882c9718d5624b220c5eb9880636eb47c3e8a00a3f4c696197f4dcc18d51b469aec4e522d3c31d6bc51b",
    "signer": "0x46195Fb29747D83Bc1A0bff3aAfE602F0f74785e",
    "userId": "364704444"
  }
}