{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987732555",
    "entityType": "User",
    "nonce": "0x95370b3304eca28b4420c5c53b144d6a4ad844b0d4ea7c5d23e800c9ab97027b",
    "signature": "0xdc0cc23ec46fb0727a1bdaf7e66882a21c95d5774eaa8a6dd3bd60393e46351e0fc5c73035cb9b945bf3d2f1e5a2cf162c52822660218d7c6d773996cd2f98be1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}