{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x5f9c96da33b51bcc331b817e7c6e8c8b5a070583b821fd5fbbaad012232cb775",
    "signature": "0xb9c37a4549179eb26a6ed296926943b4430bfb6ec78f790bd95bc6bf8215eed426ba10a66d5c9e0b43db732b23b58b4b1a9ffe05ddfc41b7ad5c345c37e002991b",
    "signer": "0x2147B2CDf9246a066970f23473B35056BD42dFB2",
    "userId": "577412293"
  }
}