{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "973583567",
    "entityType": "User",
    "nonce": "0xff3938352eb97fd171383e80a47ad48b5a514ab7cf13120ae30f6f53ed5da439",
    "signature": "0x17bfa66834b83bc063c73cb187833757007f2a7950cae3ace0ac381d90bc37734828ad6e1ab157a912ab7b82fe7c168aec29717b328a94b88382bfa0d8a0880d1b",
    "signer": "0x4ad870a0C318214b4796d1464BC8Dc57C6b84C12",
    "userId": "408505072"
  }
}