{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "642876820",
    "entityType": "User",
    "nonce": "0xbbb40bf92a3bf85c7623457e278c36babe85a6ae382f2adec6afa862e338059d",
    "signature": "0x379ea149f6a63b21aec146c2ec18ae601d9b30f7d0d01cf7ccad4e3b66c52e35762d72a14a2c3983b24725ef52705beea382ed0fde4fa34bb2d8ba16b5b88b2e1c",
    "signer": "0x6015AC6ad37b0328C10a529E70348751FE8ffF41",
    "userId": "176201"
  }
}