{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8802458c8054923c136641393f06eecfe334f176c3d7168f8477a4e42b64eac5",
    "signature": "0x34f6f797ad952e920328938169e2141d93800fc279399696a47de3355eb585ee0af3a92adc61cdc1e8fcb424127be4d38c392305e41a9b6cbaa579cbda06d8c31b",
    "signer": "0xaA3d592d7E4F94c34B231c9156802F7D6a08D54b",
    "userId": "10948050"
  }
}