{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343",
    "entityType": "User",
    "nonce": "0x8070f1f6e5f57bee18ea36f96ed45426b76d585e80eb102179e29dd052fe557e",
    "signature": "0x874839aad3ae81ec20a6ed99c26536d4f1257ac2bc43b83ba8187c02d4f7aaf85643f04e7e3c43265b8cfc249aa7b315d3834e19de2770a472e1114ab414e4e61b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}