{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3c7b797f9eb33634e719169abb4289c2a783b2da3de6b7b41e2bfef281cad655",
    "signature": "0x8d3be437e57d1d28b4eda730f157d1a76fea013303f405eb2a681af4239e68690d33994be311ba1ba5243ca2905f577d7d5295979d5cee31983352162153eda91b",
    "signer": "0xc75095DEAeC252c6C57489164ebc05a357d31Acf",
    "userId": "999838070"
  }
}