{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7618349c221ba63c2dd7f32aed3370ea19aee29323197f0dba62c1ee450c0caf",
    "signature": "0x017492ea3dc0652a8e0919c1bc4b0dbe48351c7bb32d9234ee14e41f328785b257dc758ed50181c79f1899db9ee95f26578ad66b33a26eb5976a08c46cdb8e7c1b",
    "signer": "0xd53B1771B904e1c51c6548a358eE6CCB545A717f",
    "userId": "232384371"
  }
}