{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987917950",
    "entityType": "User",
    "nonce": "0x100b2c3059eb27aa81e81739233c609d2f69898079ece0a39cb377610e6a2b1c",
    "signature": "0x457c374a41cf0e88289c91955cb8b2356324b9f7c9edcbb15cc58342957b430e1db8e1f9a19b1954d1b3912ff093c0477c53f62a4ca0d7f99b9ab11c152fac531b",
    "signer": "0x41E0D919F5E5E950b3646cc2545AB0d2c70af998",
    "userId": "962472503"
  }
}