{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1450501",
    "entityType": "User",
    "nonce": "0x0642a8c65e56935662613d8d762f569b036388b1a2a4d572f2801b5b0c188df0",
    "signature": "0xdb2ddded3549d3bcc24910b316480d789737d700cfefd4683e525382fd9d41d35e9232ce6a9a0e016019480e3591d0225e2be4735dbdfa3baebc19f6fab9da7f1c",
    "signer": "0x1F7AD5e639e74f62C577d6ee9140C839b0100481",
    "userId": "513323235"
  }
}