{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x5528f3cdc43d39e92dc2dcf32cd5b1b132e781772fe50a2eb733edee79785141",
    "signature": "0xf66ccd158230ead9f311a95be9931c443b9d993ec6935899161b6bc74591da56170ca1ea68d26fabc546e670f83813710dc6f46d09d39f1b75f71db27ab4318b1b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}