{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "228403",
    "entityType": "User",
    "nonce": "0xc5f4916fd9e46f03878cacd08f9a456d85857e82205de80450fb4212529618a5",
    "signature": "0xb3b7aa349ee5aedeec116cad5cd8034c5edbe2d847f2f7e1aa53619459d38cea08f600c10f591081353185f3a625ddb6f056b6370b2fe9f227ae38c16342cdfd1c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}